Source: http://www.google.com/patents/US7144383?dq=7,190,101
Timestamp: 2015-06-02 12:01:45
Document Index: 353241855

Matched Legal Cases: ['arts 30', 'arts 30', 'arts 30', 'art 31', 'art 30', 'arts 30', 'art 31', 'art 30', 'arts 30', 'arts 31', 'art 30', 'art 30', 'arts 14', 'art 15', 'art 14', 'arts 14', 'art 14', 'art 96', 'art 15', 'art 15', 'art 14', 'art 12', 'art 15', 'arts 14', 'arts 14']

Patent US7144383 - Surgical/medical irrigating handpiece with variable speed pump, integrated ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA medical/surgical irrigating handpiece with both a discharge line through which fluid is applied to the site and a suction line through which the discharge fluid is drawn away. The handpiece has a variable speed pulse pump. A single, variable-speed motor actuates the pump to regulate the pumping rate....http://www.google.com/patents/US7144383?utm_source=gb-gplus-sharePatent US7144383 - Surgical/medical irrigating handpiece with variable speed pump, integrated suction and battery packAdvanced Patent SearchPublication numberUS7144383 B2Publication typeGrantApplication numberUS 10/838,890Publication dateDec 5, 2006Filing dateMay 4, 2004Priority dateApr 19, 1993Fee statusLapsedAlso published asUS6746419, US20040210186, US20070149918, US20130110035Publication number10838890, 838890, US 7144383 B2, US 7144383B2, US-B2-7144383, US7144383 B2, US7144383B2InventorsJeffery D. Arnett, Nicholas V Gately, David H. Grulke, Ruth A. Hilsbos, James L SerticOriginal AssigneeStryker CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (102), Non-Patent Citations (41), Referenced by (6), Classifications (17), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetSurgical/medical irrigating handpiece with variable speed pump, integrated suction and battery pack
US 7144383 B2Abstract
A medical/surgical irrigating handpiece with both a discharge line through which fluid is applied to the site and a suction line through which the discharge fluid is drawn away. The handpiece has a variable speed pulse pump. A single, variable-speed motor actuates the pump to regulate the pumping rate. Power to actuate the motor comes from a battery pack that remote to the handpiece. A control mechanism attached to the handpiece regulates the energization signal applied to the motor so as to regulate motor speed.
1. A medical irrigator comprising:
a housing shaped to be hand held and having a front end;
an inlet tube extending to said housing;
a pulse pump capable of operating at a variable rate disposed in said housing and having an outlet conduit that opens to the housing front end, said pump configured to receive fluid from said inlet tube and discharging the fluid through said outlet conduit;
a single electric motor disposed in said housing and connected to said pump for actuating said pump, said motor operable at variable speeds to control the pumping rate of said pump;
a control assembly disposed in said housing to regulate the speed of said motor;
a suction tube disposed in said housing that has an open end adjacent the front end of said housing that extends away from the front end;
a battery pack separate from said housing; and
a flexible conductor assembly extending from said battery pack to said housing for supplying energy stored in said battery pack to said motor.
2. The medical irrigator of claim 1, wherein said control assembly has a switch that is moveably mounted to said housing, said control assembly configured so that:
when said switch is in a first position, said control assembly does not supply an energization signal to said motor;
when said switch is in a second position, said control assembly supplies a first energization signal from said battery pack to said motor; and
when said switch is in a third position, said control assembly supplies a second energization signal from said battery pack to said motor.
3. The medical irrigator of claim 2, wherein said switch is pivotally attached to said housing.
4. The medical irrigator of claim 3, wherein said switch is configured to move:
from the first position and to the second position; and
from the second position to the third position.
5. The medical irrigator of claim 2, wherein said switch is configured to move:
6. The medical irrigator of claim 1, wherein said pump is bellows pump.
7. The medical irrigator of claim 1, wherein said housing is formed to have: a handle; and a barrel integral with and located above said handle that extends forward from said handle, said barrel having the housing front end from which said pump discharges fluid and from which said suction tube extends.
8. The medical irrigator of claim 1, wherein said pump is a reciprocating pump.
9. The medical irrigator of claim 1, wherein said inlet tube extends from said battery pack to said housing.
10. A medical irrigator having:
a housing shaped to be hand held, said housing having a front face shaped to receive a medical/surgical tip assembly;
a discharge conduit disposed in said housing that opens into the front face of said housing and a suction tube that extends from the housing front face, both said discharge conduit and said suction tube being configured to be connected to separate conduits integral with the tip assembly;
an inlet line connected to said housing;
a pump disposed in said housing connected to receive fluid from said inlet line and pump fluid out through said discharge conduit, said pump being a pulse pump that operates at a variable rate;
a single, variable speed electric motor in said housing that is connected to said pump that actuates said pump so as to regulate the pumping rate of said pump;
a conductor assembly including a plurality of flexible conductors, said conductor assembly having a distal end disposed in said housing and a proximal end spaced from said housing;
a battery pack separate from said housing, said battery pack attached to said conductors at the proximal end of said conductor assembly; and
a switch assembly mounted to said housing for selectively establishing a connection between at least one of said conductors and said motor, said switch assembly having a switch element moveably attached to said handle, said switch assembly being configured so that:
when said switch element is in a first position, said switch assembly does not supply an energization signal to said motor;
when said switch element is in a second position, said switch assembly supplies a first energization signal from said battery pack to said motor; and
when said switch element is in a third position, said switch assembly supplies a second energization signal from said battery pack to said motor.
11. The medical irrigator of claim 10, wherein said switch element is pivotally attached to said housing.
12. The medical irrigator of claim 10, wherein said switch element is configured to move:
13. The medical irrigator of claim 10, wherein:
said conductor assembly includes: a first conductor over which a first energization signal from said battery pack is supplied; and a second conductor over which a second energization signal from said battery pack is supplied; and
said switch assembly is configured so that:
when said switch element is in the second position, said switch assembly connects said first conductor to said motor; and
when said switch element is in the third position. said switch assembly connects said second conductor to said motor.
14. The medical irrigator of claim 10, wherein said switch assembly includes a single conductive member that is directly connected to said motor.
15. The medical irrigator of claim 10, wherein said pump is a bellows pump.
16. The medical irrigator of claim 10, wherein said switch element is pivotally attached to said housing.
17. The medical irrigator of claim 10, wherein said pump is a reciprocating pump.
18. The medical irrigator of claim 10, wherein said inlet tube extends from said battery pack to said housing.
19. The medical irrigator of claim 10, wherein:
said inlet line is a flexible hose that extends from outside said housing into said housing; and
said conductor assembly is attached to said hose so that at least a portion of said conductor assembly extends along said hose.
20. A medical irrigator comprising:
a housing shaped to have a front end;
a suction tube disposed in said housing having an inlet end that opens from the front end of said housing;
a pulse discharge pump that operates at a variable rate disposed in said housing having an inlet and discharge conduit, the discharge conduit opening towards the front end of said housing;
an inlet line that extends into said housing that is in fluid communication with the pump inlet;
a single electric motor disposed in said housing and connected to said pump to actuate said pump, said motor operating at variable speeds to regulate the pumping rate of said pump;
a battery pack separate and spaced from said housing that contains at least one battery that stores energy for energizing said motor;
a flexible cable that extends from said battery pack to said housing for supplying energy from said battery pack to said motor; and
a control assembly integral with said housing, said control assembly having a switch member moveably mounted to said housing and said control assembly being configured to apply a variable energization signal from said battery pack to said motor so as to control the speed of said motor and regulate the pumping rate of said pump.
21. The medical irrigator of claim 20, wherein said control assembly is configured so that said switch member moves sequentially from a first position to a second position and from the second position to a third position and:
when said switch member is in the first position, the switch member does not establish a connection between said cable and said motor;
when said switch member is in the second position, the switch member establishes a connection between said cable and said motor to cause a first energization signal to be applied to said motor; and
when said switch member is in the third position, the switch member establishes a connection between said cable and said motor to cause a second energization signal to be applied to said motor.
22. The medical irrigator of claim 20, wherein:
said cable includes a first conductor over which a first energization signal is available from said battery pack and a second conductor over which a second energization signal is available from said battery pack; and
said control assembly is configured so that switch member can be selectively positioned to: connect neither of said cable conductors to said motor; connect the first said cable conductor to said motor; or connect the second said cable conductor to said motor.
23. The medical irrigator of claim 22, wherein said control assembly is configured to sequentially move from the position in which neither said cable conductors are connected to said motor to the position in which said first cable conductor is connected to said motor and to the position in which the second said cable conductor is connected to said motor.
24. The medical irrigator of claim 20, wherein said pump is a reciprocating pump.
25. The medical irrigator of claim 20, wherein said pump is a bellows pump.
26. The medical irrigator of claim 20, wherein said inlet line extends from said battery pack to said housing.
27. The medical irrigator of claim 20, wherein:
said cable is attached to said hose so that at least a portion of said cable extends along said hose.
28. A medical irrigator, said irrigator comprising:
a housing having a front face shaped to receive a medical tip assembly;
a pulse discharge pump that operates a variable rate, said pump having an inlet and an outlet, the outlet opening into the front face of said housing so as to be in fluid communication with a first conduit of the tip assembly;
a suction tube in said housing having an open end located adjacent the front face of said barrel so as to be in fluid communication with a second conduit of the tip assembly;
a single, variable speed electrical motor disposed in said housing connected to said pump for actuating said pump at variable rates;
a battery unit separate from said housing for supplying energy to said motor;
a control assembly mounted to said housing and connected to said battery unit and to said motor for supplying a variable potential energization signal to said motor, said control assembly having a single switch member that is moveably attached to said housing that selectively makes/breaks a connection between said battery unit and said motor and establishes the potential of the energization signal supplied to said motor.
29. The medical irrigator of claim 28, wherein said control assembly is configured so that said switch member moves sequentially from a first position to a second position and from the second position to a third position and:
when said switch member is in the first position, the switch member does not establish a connection between said battery unit and said motor;
when said switch member is in the second position, the switch member establishes a connection between said battery unit and said motor to cause a first energization signal to be applied to said motor; and
when said switch member is in the third position, the switch member establishes a connection between said battery unit and said motor to cause a second energization signal to be applied to said motor.
30. The medical irrigator of claim 28, wherein said control assembly has a first contact over which a first energization signal is available from said battery unit and a second contact over which a second energization signal is available from said battery unit and said control assembly is configured so that said switch member can be selectively positioned to: connect neither of said contacts to said motor; connect the first said contact to said motor; or connect the second said contact to said motor.
31. The medical irrigator of claim 30, wherein said control assembly contacts are statically mounted to said housing.
32. The medical irrigator of claim 30, wherein said control assembly is configured so that said switch member moves sequentially from:
a position in which no energization signal-supply contacts are connected to said motor to a position in which said first contact is connected to said motor; and
from the position in which said first contact is connected to said motor to a position in which said second contact is connected to said motor.
33. The medical irrigator of claim 28, wherein said pump is a reciprocating pump.
34. The medical irrigator of claim 28, wherein said pump is a bellows pump.
35. The medical irrigator of claim 28, wherein a flexible cable extends from said battery unit to said control assembly.
36. The medical irrigator of claim 28, wherein said housing includes a handle and a barrel that extends above and projects forward of said handle, said barrel having the front face of said housing.
37. The medical irrigator of claim 28, wherein:
a flexible hose extends from outside said housing into said housing through which fluid is supplied to the pump inlet; and
a flexible cable extends from said battery unit to said housing, said cable being connected to said control assembly and being attached to said hose so that at least a portion of said cable extends along said hose.
38. A medical irrigator, said irrigator comprising:
a pulse discharge pump disposed in said housing that operates at a variable rate, said pump having an inlet and an outlet, the outlet opening into the front face of said housing so as to be in fluid communication with a first conduit of the tip assembly;
a suction tube in said housing having an open end located adjacent the front face of said housing so as to be in fluid communication with a second conduit of the tip assembly;
a single, variable speed electric motor disposed in said housing connected to said pump for actuating said pump at variable rates;
a battery pack separate from said housing containing at least one battery;
a flexible cable that extends from said battery pack to said housing, said flexible cable having at least one conductor over which an energization signal from said at least one battery is supplied; and
a control assembly attached to said housing and connected between said at least one conductor and said motor for supplying a variable potential energization signal to said motor, said control assembly having a single switch member that is moveably attached to said housing that selectively makes/breaks a connection between said at least one conductor and said motor and that establishes the potential of the energization signal supplied to said motor.
39. The medical irrigator of claim 38, wherein said control assembly is configured so that said switch member moves sequentially from a first position to a second position and from the second position to a third position and:
when said switch member is in the first position, the switch member does not establish a connection between said at least one conductor and said motor;
when said switch member is in the second position, the switch member establishes a connection between said at least one conductor and said motor to cause a first energization signal to be applied to said motor; and
when said switch member is in the third position, the switch member establishes a connection between said at least one conductor and said motor to cause a second energization signal to be applied to said motor.
40. The medical irrigator of claim 38, wherein:
said cable has a first conductor over which a first energization signal is available from said at least one battery and a second conductor over which a second energization signal is available from said at least one battery; and
41. The medical irrigator of claim 40, wherein said control assembly has a first contact to which said first cable conductor is attached and a second contact to which said second cable conductor is attached and said contacts are statically mounted to said housing.
42. The medical irrigator of claim 40, wherein said control assembly is configured so that said switch element moves sequentially from:
a position in which no energization signal-supplying conductors are connected to said motor to a position in which said first cable conductor is connected to said motor; and
from the position in which said first cable conductor is connected to said motor to a position in which said second cable conductor is connected to said motor.
43. The medical irrigator of claim 38, wherein an inlet hose extends from said battery pack to said housing, said inlet hose being connected to the pump inlet.
44. The medical irrigator of claim 38, wherein said housing is shaped to have a handle and a barrel integral with said handle that is located above and projects forward of said handle.
45. The medical irrigator of claim 44, wherein said motor is disposed in said housing handle.
46. The medical irrigator of claim 38, wherein:
said cable is attached to said hose so that at least a portion of said cable assembly extends along said hose.
This is a continuation of Ser. No. 09/460,705, filed Dec. 14, 1999, now U.S. Pat. No. 6,746,419, which is a continuation of Ser. No. 09/009,657, filed Jan. 20, 1998, now U.S. Pat. No. 6,022,329, issued Feb. 8, 2000 which is a continuation of Ser. No. 08/559,133, filed Nov. 17, 1995, now U.S. Pat. No. 5,718,668, issued Feb. 17, 1998 which is a continuation of Ser. No. 08/049,144, filed Apr. 19, 1993, now U.S. Pat. No. 5,470,305.
FIG. 17 is a front end elevational view of the pump unit of FIG. 16 taken substantially from the left side of FIGS. 2–4 and 16.
In the following detailed discussion the terms “up”, “down”, “right” and “left”, and variations thereon, refer to structural elements in their positions in specified drawing figures.
The drive unit 25 (FIGS. 2–15) is self contained in its own shell 26 (FIG. 2). For convenience in assembly, the shell 26 comprises two opposed concave shell parts 30 and 31 respectively disposed to the left and right in FIG. 2. The shell parts 30 and 31 are preferably of rigid molded plastics material. When the drive unit 25 has been assembled, as in FIGS. 2 and 9, the shell parts 30 and 31 are held fixedly together by any convenient means, here by resilient snap connection of generally U-shaped clips 32, molded in spaced relation along the perimeter edge of the shell part 31 which overlap the perimeter edge of the shell part 30 and snap over tabs 33 protruding therefrom, as seen in FIGS. 5–7. Precise location of the shell parts 30 and 31 with respect to each other is assisted by locator pins 34 fixedly protruding from the shell part 31 and holes 35 in the opposed portions of the shell part 30.
A single conventional DC energizable electric motor 36 (FIGS. 4 and 5) is snugly housed in the space between the left and right (FIG. 2) shell parts at the rear (left in FIGS. 5–7, 10 and 12) thereof. The motor 36 is snugly axially located between the rear end wall and a transverse internal bulkhead 41 of the shell 26 (FIGS. 5–7, 10 and 12). The rear end wall 40 and bulkhead 41 have opposed parts in the left and right shell parts 30 and 31, as seen in FIGS. 6 and 7.
The above discussed moving elements of the transmission 50 are located and movably supported within the shell 26 as follows. The face gear 54 has coaxial downward and upward (FIGS. 5–7, 10 and 12) extending stub shafts 75 and 76 respectively rotatably supported in coaxial bearing bosses 80 and 81 respectively fixed on the opposing faces of the shell parts 31 and 30 (FIGS. 6, 7 and 12). Similarly, the output gear 60 and the eccentric member 62 have respective downward and upward extending stub shafts 82 and 83 coaxial with the output shaft 61 and rotatably supported in respective cylindrical bearing bosses 84 and 85 in the respective shells 31 and 30 (FIGS. 5–7 and 12). The link member 51 is slidably guided for reciprocation in a notch 90 (FIGS. 5 and 7) in the peripheral wall 91 of the left (upper in FIG. 5) shell part 30. The notch 90 has parallel opposed guide faces 92 (FIG. 7) spaced apart to snugly slidably guide therebetween the opposite guide rails 74 of the link member 51, and thus spaced at substantially at the maximum width of the link member. The thickness of the link member is guided for reciprocation between the peripheral edge 93 of the right (lower in FIG. 5) shell 31 and the width wall 94 (FIGS. 5 and 7) of the other shell part 30.
The drive unit 25 is located within the handle 12, as follows. As seen in FIGS. 3 and 4, transverse ribs 95 are molded into the interior surface of the handle 12 at opposing locations in the left and right housing parts 14 and 15 (FIGS. 2–4). For drawing convenience, only the ribs in the right housing part 15 are shown, the ribs in the left housing part 14 being compatible. The ribs 95 locate the drive unit 25 in the rightward/leftward direction in FIG. 2. Further, the drive unit shell bosses 84 and 85 (FIG. 5) protrude sideways from the drive unit shell and are pivotally received in corresponding hollow cylindrical bosses, one of which is shown at 96 in FIG. 2, and which extend toward each other from the interior of the left and right housing parts 14 and 15. The hollow cylindrical boss 96 of the left housing part 14 is not shown but is opposed to and compatible with the housing part 96 shown in the right housing part 15 of FIG. 2. The drive unit 25 is thus, except for the lateral positioning defined by the ribs 95, pivotally located within the handpiece housing 11 and is thus capable of some pivotal floating in the housing to achieve proper alignment of the longitudinal movement axis LA (FIG. 7) of the link member 51 with respect to the barrel 13 and a pump unit 100 (FIGS. 2–4 and 16–18) located in the barrel 13 as hereafter discussed.
Turning now to the pump unit 100, attention is directed to FIGS. 2–4 and a6 18. The pump units includes a bellows 101 including an axially expandable and contractable, reciprocating, bellows wall 114 (FIG. 18) and a forwardly extending, rigid annular flange wall 102. Such flange wall 102 is loosely telescoped over a rigid, rearwardly extending annular flange 103 of a rigid, forwardly extending coaxial bellows housing 104.
To axially reciprocatingly drive (repetitively axially contract and expand) the bellows 101, the above discussed link member 51 (FIG. 5) of the drive unit 25 has its fork 71 provided with a central, radially opening, generally U-shaped slot 122 (FIGS. 11–13). The slot 122 divides the fork 71 into a pair of tines 123 (FIG. 11). The slot 122 opens leftwardly in FIG. 2, namely away from the rightward housing part 15 and toward the leftward housing part 14. Thus, with the drive unit 25 located in the right housing part 12 as seen in FIG. 3, the pump unit 100 can be inserted into the rightward housing part 15, with the stub 120 (FIG. 18) inserted in the slot 122 of the fork 71 (FIG. 11) so as to trap the tines 123 axially between the drive end wall 116 and head 121 of the bellows 101, as generally indicated in FIGS. 3 and 4. To prevent the bellows stub 120 from accidentally radially escaping out the open end of the slot 122 in the fork 71, the central portion 124 (FIG. 11) of the slot 122 is undercut by inward tapering of an intermediate portion 125 of the slot 122 as seen in FIG. 11. The tapered portion 125 of the slot 122 (FIG. 11) defines a snap fit detente for resiliently trapping the bellows stub 120 in the drive unit slot 122. Thus, to install the bellows stub 120 in the slot 122, the bellows stub 120 must be resiliently forced through the tapered portion 125 of the slot 122 and upon passing the latter, the stub resiliently snaps into the central portion 124 of the slot. The inner ends of the tapered portion 125 of the slot resiliently maintain the stub radially inboard thereof, in the central portion 124 of the slot 122.
The bellows housing 104 comprises a rear (right in FIGS. 18 and 18C) facing recess having a perimeter defined by the annular flange 103 of the bellows housing 104 and a rear facing radial wall 136 which defines the front end of the pumping chamber 115. The umbrella valve 134 lies coaxially in the resulting recess 103, 136. The forward facing perimeter 137 of the umbrella valve 134, in its closed condition shown in FIGS. 18 and 18C, presses forward against the radial wall 136 to seal thereagainst. The valve member 131 is held against the right (rearward) movement away from the bellows housing wall 136 by axial interference between a rightward facing, radially outward extending, annular step 140 (FIG. 18C) at the rear (right) end of the duck bill valve 133, and a radially inward extending, leftward facing, annular flange 141 of the bellows housing 104. The radially inward directed, annular flange 141 is axially interposed between, and forms a port 142 between, the rear facing recess 103, 136 and a coaxial, forwardly extending, cylindrical, irrigation liquid outlet, discharge, conduit 143 (FIGS. 18 and 18C). The tubular central portion 132 of the valve member 131 extends snugly axially through the port 142.
The irrigation liquid hose 160, the inlet line, integrally therewith, a smaller diameter rib 170 (FIGS. 2, 16, and 17) A plurality (here three) insulated electrical conductors (wires) 171 have intermediate portions contained within and extending the length of the rib 170. Forward end portions of the insulated wires 171 emerge from the forward end of the rib 170 and carry conventional electrically conductive connectors 175. The forward end of rib extend through the notch 167 (FIG. 2) and ends just inside the bottom portion of the handle of the housing 11, as seen in FIG. 4. The forward ends of the conductors, carrying the connectors 175, extend into the lower portion of the handpiece handle 12. Thus, as apparent from the below description, rib 170 functions as a cable through which conductors 171 extend from the battery pack to the handpiece housing 11.
To provide operating electrical power to the motor 36, a compact, self contained electrical supply unit 190, a battery pack, (FIGS. 20–25 is fixed on the rear portion of the liquid hose 16O. The power supply unit is thus located remotely from the handpiece 10, adjacent to the source S of irrigation liquid.
Each of the battery contacts 210, 211 and 212 thus slides with its corresponding foot into the desired location with respect to the grooves 200F, 200R and 207 and locks fixedly therein. This is generally indicated in FIGS. 22–24. The battery contacts 210, 211 and 212 have respective resilient fingers 221, 222 and 223 (FIGS. 26, 27 and 28 respectively), two each for the battery contacts 210 and 211 and one each for the battery contacts 212. Such fingers 221, 222 and 223 protrude from the respective slots 200F, 200R and 207 into the interior of the pan 192 for electrically contacting batteries 230 (FIG. 22) to be housed in the pan 192. Further, the battery contact 211 and each of the battery contacts 212 (FIGS. 27 and 28 respectively) have an upstanding terminal (224 and 225 respectively) of simple rectangular shape for releasable telescoped engagement within a respective one of the connectors 176 at the rear ends of the three insulated electrical conductors 171 (FIG. 22).
Turning now to the arrangement of the batteries 230 within the pan 192, one embodiment according to the invention advantageously uses batteries of a kind widely available in retail stores, namely AA size alkaline batteries. In addition to their wide availability to the public, these batteries advantageously are inexpensive, have a long shelf life and provide full operating voltage until almost fully discharged. In the embodiment shown, eight such batteries 230 are provided and are individually indicated at B1, B2, B3, B4, B5, B6, B7 and B8. As shown in FIGS. 22–24, ribs 231 extending circumferentially within the pan 192 cradle the batteries 230 fixedly but removably within the pan 192. The polarity of the eight batteries is indicated by “plus” signs marked thereon. As seen in the drawings, the batteries 230 are arranged in four rows of two head-to-tail batteries each. Four of the batteries 230 lie in the bottom (FIGS. 22 and 23) of the pan in two rows of two each and the remaining four batteries 230 lie on top of those.
The ends of the battery rows bear variously on the above discussed battery contacts 210, 211 and 212 as generally indicated for example in FIG. 22 and also in the schematic circuit drawing in FIG. 22A. More particularly, the four batteries B1, B2, B3 and B4 defining a vertical plane nearest to the viewer in FIG. 23 are connected in series from the near connector 212 leftwardly through the top row of batteries, down through the near upstanding connector 210 and thence rightwardly through the bottom pair of batteries to the lower rear connector 211. The remaining four batteries B5–B8 are arranged in a vertical plane behind above-mentioned batteries B1–B4. More particularly, the batteries B5–B8 connect in series from the far side of the lower rear connector 211 forwardly (leftwardly in FIG. 22) to the far connector 210, upwardly therethrough, and then rearwardly back to the far upper connector 212.
The cover 193 (FIGS. 23 and 25) has plural, laterally extending, depending ribs 232 (FIGS. 23 and 25) intended to seat upon the uppermost batteries B1, B2, B7 and B8 and fix the batteries B1–B8 in the pan with the cover 193 fixed in its normal closed position atop the pan 192. The cover is fixedly securable atop the pan by any convenient means, such as snap fit connectors, a portion of which are generally shown in 233 in FIG. 22, and generally like those discussed above with respect to the handpiece housing 11, as at 16, and as generally discussed with respect to the drive unit shell 26, as at 32, 33.
The handpiece 10 further includes a trigger unit 240 (FIGS. 2–4) for controlling actuation of the motor 36 and, by extension, pump unit 100. The trigger unit 240 comprises a generally L-shaped trigger member 241 (FIGS. 2, 4 and 4A), that functions as a control switch, and that comprises an elongate trigger lever 242. The upper, forward (leftward in FIGS. 2 and 4) end of the trigger lever is pivoted by laterally extending integral pins 243 pivotally receivable in suitable holes in laterally opposed bosses (one of which is shown in FIG. 2) in the opposed lower edges of the housing parts 14 and 15, near the rear end of the barrel 13. Snapping together of the two housing parts 14 and 15 thus captures the pivot pins 243 and pivotally mounts the trigger with respect to the handpiece housing.
Further pulling in of the trigger lever 242 by the user causes the beveled free end of the arm 251 to bend rightwardly (FIG. 4A) the contact leaf 267 to a dotted line position indicated at 267C, allowing the free end of the arm 251 to override the contact leaf 267, such that the contact blade 253 moves into its “full-pull” dotted line position 253C and further bends the motor contact 270 its dotted line position 270C. In this final position, the contact blade 253 establishes electrical contact between the motor contact 270 and the contact leaf 267, thereby applying the full series voltage of all eight of the batteries B1–B8 to the motor 36 to operate the latter at its full speed and thereby drive the pump unit 100 at its full output, namely to provide irrigation liquid pulses out of the pump unit 100 at maximum pulse amplitude and frequency.
When the user releases the trigger lever 242, the resiliently bent trigger lever 242, due to its inherent resilience, springs back from its fully pulled-in position indicated in broken lines at 242P, to its solid line rest position indicated at 242 (FIG. 4A). The electrical connection between the contact 262 or 263 and the contact 270 is broken.
The electric power supply unit 190 (FIG. 22) is quickly and easily assembled. More particularly, the feet of the respective battery contacts 210, 211, 212 (FIGS. 26–28) are slid downward into their respective grooves (FIGS. 23A and 23B) in the pan 192 (FIG. 22) with their protruding toes resiliently gripping the sides of the grooves. The rear connectors 176 are connected to the battery contact fingers 224 and 225 in the order shown in FIG. 22A. The batteries B1–B8 are then slipped down into the pan in the orientation shown in FIG. 22 and into electrically conductive engagement with the battery contacts 210, 211 and 212 indicated in FIG. 22A. The rear portion of the liquid hose 160 is laid atop the batteries as indicated in FIG. 23, with the square flange 182 nonrotatable in the boss 235, and the cover 193 is snap fitted atop the liquid hose 160 and battery filled pan 192, as shown in FIG. 23, to complete assembly of the power supply unit. The cap 185 is pressed onto the sharpened tip 184 to protect it prior to use.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS509220Feb 9, 1892Nov 21, 1893 John gustafsonUS602666Dec 17, 1896Apr 19, 1898 Hydraulic pumpUS738503Dec 11, 1902Sep 8, 1903Frederick R WatersPipe-coupling.US790353Aug 31, 1904May 23, 1905Everett S EstlingenIrrigator for urethral or other cavities.US1317851Dec 5, 1918Oct 7, 1919Fred R ArnettSyringe.US1503279Nov 17, 1922Jul 29, 1924Nixon LeroyPulsatorUS1538007Nov 23, 1923May 19, 1925John C SchellinVacuum-hose coupling and menderUS1846596May 14, 1927Feb 23, 1932Harry HertzbergPulsating irrigatorUS2012886Nov 10, 1933Aug 27, 1935Samuel Lowry HenryAttachment for dental hand pieces and stone protectors and water coolersUS2112629Sep 29, 1936Mar 29, 1938Lloyd RusselTrocarUS2139653May 11, 1936Dec 13, 1938Belfrage Frank RSyringeUS2197995Apr 6, 1937Apr 23, 1940Dill Mfg CoValveUS2243285Jan 6, 1936May 27, 1941Charles E PopeOperating scopeUS2243299Oct 8, 1940May 27, 1941Ellis TraversIrrigating applicatorUS2494088Feb 13, 1948Jan 10, 1950Dulity Nicholas MColon irrigating deviceUS2531793Apr 15, 1948Nov 28, 1950Steve SulekHygienic syringeUS2595491Oct 31, 1950May 6, 1952Schweikert Edward WMouth washerUS2634885Oct 19, 1949Apr 14, 1953North Joseph MLubricating apparatusUS2662485Oct 4, 1951Dec 15, 1953Standard Oil Dev CoWell pumpUS2684049Nov 28, 1952Jul 20, 1954Chemical Packaging CorpPasting machine paste ejectorUS2727678Dec 6, 1954Dec 20, 1955Gomco Surgical Mfg CorpSuction pumpUS2733713Oct 10, 1952Feb 7, 1956 kabnictfUS2781154Dec 23, 1955Feb 12, 1957North American Aviation IncMetallic powder projectorUS2802466Feb 7, 1955Aug 13, 1957Thomas Leroy ASyringeUS2847007Jul 19, 1954Aug 12, 1958Fox Dorothy BrownFluid handling unit and apparatusUS2874696Jul 27, 1954Feb 24, 1959Bried Julien AColon flushing apparatusUS2908273Nov 7, 1956Oct 13, 1959John T HustonPower vaginal irrigatorUS2993654Feb 10, 1959Jul 25, 1961Norton Orlo CFlow control for fluids and the likeUS3001288Jun 17, 1958Sep 26, 1961Hyman FreedmanDental mirrorUS3014623Jan 29, 1958Dec 26, 1961Borg WarnerMotor and pump mounting meansUS3039272Sep 18, 1961Jun 19, 1962Union Carbide CorpFluid actuating deviceUS3044465May 8, 1958Jul 17, 1962AndermacMixing and dispensing apparatusUS3048121Apr 14, 1960Aug 7, 1962Sheesley John MHydraulic actuated pumpUS3065749May 4, 1959Nov 27, 1962Piorvit S R LInjection and vacuum cleaner for dental therapeuticsUS3070089May 17, 1961Dec 25, 1962Dick Dale OResuscitatorUS3135259Dec 12, 1963Jun 2, 1964Sterilon CorpInfusion flow control valveUS3208145Jan 18, 1963Sep 28, 1965Robert V TurnerAspirating handpiece with controls for vacuum, air, and waterUS3227158May 8, 1961Jan 4, 1966Aquatec CorpMethod and apparatus for oral hygieneUS3237306Jan 9, 1962Mar 1, 1966American Hospital Supply CorpWater coolant supply system for airdriven dental handpiecesUS3263618Apr 21, 1964Aug 2, 1966Gen Motors CorpWindshield washer pumpUS3295371Feb 21, 1964Jan 3, 1967Smith Dev CoLease automatic custody transfer unitUS3316845Jul 28, 1965May 2, 1967Schumann Alfred FBilge pumpUS3353537Aug 11, 1965Nov 21, 1967Crowe William FAutomatic multi-dosage inoculating instrumentUS3359909Jun 10, 1965Dec 26, 1967John E Mitchell CompanyPump surge chamber and secondary liquid feederUS3393673Nov 23, 1964Jul 23, 1968Aqua Tec CorpOral hygiene apparatusUS3416567Feb 12, 1965Dec 17, 1968Viggo AbSyringe valveUS3425410Sep 8, 1966Feb 4, 1969Aqua Tec CorpFluid pressure control for oral hygiene apparatus of the water jet typeUS3426743Oct 27, 1964Feb 11, 1969United Aircraft CorpHeart pump augmentation systemUS3448766Jun 22, 1965Jun 10, 1969Albert SchuleCheck valveUS3452746Mar 15, 1967Jul 1, 1969William M ShanhouseOral hygiene deviceUS3484121Sep 26, 1966Dec 16, 1969Quinton Wayne ECannula extension and connector apparatusUS3508546Jun 4, 1968Apr 28, 1970Rogers Adelle MDouche and enema apparatusUS3515130Sep 18, 1967Jun 2, 1970Yuryo Kikakuhin Kenkyusho KkJet-injection hypodermic deviceUS3561433Jul 22, 1968Feb 9, 1971Kovach Leslie JDental cleaning and massaging deviceUS3601164Mar 3, 1969Aug 24, 1971Sterigard CorpApparatus for injecting propellant into a dispensing containerUS3605556Oct 14, 1969Sep 20, 1971IttBooster pumpUS3635607Apr 20, 1970Jan 18, 1972Novelty Tool Co IncVacuum pumpUS3653377Oct 1, 1970Apr 4, 1972Bloom LeonardPortable power-operated douching applianceUS3702141Feb 22, 1971Nov 7, 1972Dresser IndGas type safety valveUS3703170 *Mar 4, 1971Nov 21, 1972Gen ElectricOral hygiene apparatusUS3713533Apr 28, 1971Jan 30, 1973Codman & ShurtleffHemostatic clip holderUS3731411Jun 11, 1971May 8, 1973Burlington Industries IncProcess for producing durable press textilesUS3731676May 6, 1971May 8, 1973Bloom LeonardPortable compact electric doucheUS3749090Jun 9, 1971Jul 31, 1973Stewart ResearchCombination aspirator and fluid delivering surgical instrumentUS3762411Sep 20, 1971Oct 2, 1973Aqua Fem IncPower aerated doucheUS3765802Jul 12, 1971Oct 16, 1973Audi Nsu Auto Union AgFeed and proportioning pumpUS3768472Feb 7, 1972Oct 30, 1973Cometta CFluid dispensing gunUS3771522Dec 3, 1971Nov 13, 1973Waysilk ESystem and apparatus for lavaging the lower intestinal tractUS3784235Oct 8, 1971Jan 8, 1974Us NavyTubular adhesive joint with snap lockUS3794031Mar 28, 1972Feb 26, 1974Rebold JElectric doucheUS3853245Jul 16, 1973Dec 10, 1974Booth JBeverage dispenserUS3861383Sep 24, 1973Jan 21, 1975Kovach Leslie JSkin massaging instrumentUS3883074Jan 23, 1974May 13, 1975John W LambertHydraulic oscillator and systems utilizing the sameUS3889675Jun 25, 1974Jun 17, 1975Stewart ResearchSuction-irrigatorUS3895741Sep 27, 1972Jul 22, 1975Bestnu Engineering PtyIntravenous fluids administration apparatusUS3949753Nov 26, 1973Apr 13, 1976Rolf DockhornApparatus for supplying aseptic fluidsUS3965934Nov 4, 1974Jun 29, 1976Peretz RosenbergFluid regulating devicesUS3982540Mar 20, 1975Sep 28, 1976Ross John RGastrointestinal aspirator pump system and methodUS3986266Jun 23, 1975Oct 19, 1976Bernard Francis VellenderDental mirrorsUS3993054Jun 19, 1975Nov 23, 1976Stryker CorporationTherapeutic lavageUS4007739Jul 18, 1975Feb 15, 1977Dan BronFluid-operated hypodermic syringeUS4030495Nov 7, 1975Jun 21, 1977Baxter Travenol Laboratories, Inc.Twin check valve pump system having fail-safe characteristicUS4030498Jul 22, 1976Jun 21, 1977Baxter Travenol Laboratories, Inc.SyringeUS4061142Jun 16, 1976Dec 6, 1977Sandoz, Inc.Apparatus for controlling blood flowUS4099527Mar 16, 1977Jul 11, 1978Howell William LParenteral fluid administration setsUS4111391Nov 22, 1976Sep 5, 1978Sloan Valve CompanyPinch valveUS4123091Nov 21, 1977Oct 31, 1978Renal Systems, Inc.Tube connectorUS4205676Mar 13, 1978Jun 3, 1980Deley C. HumphreyAir pumping for medical usesUS4215476Mar 25, 1977Aug 5, 1980Armstrong Alexander SHealth services combination irrigator and aspiratorUS4236889 *May 17, 1979Dec 2, 1980Wright Winston FDental cleaning deviceUS4248589Dec 29, 1978Feb 3, 1981A-Dec, Inc.Dental syringe with quick disconnect tipUS4250872May 25, 1978Feb 17, 1981Yehuda TamariBlood pulsating and/or pumping deviceUS4257416May 3, 1979Mar 24, 1981David PragerMulti-channel venipuncture infusion setUS4267947Jul 2, 1979May 19, 1981Alco Foodservice Equipment CompanyBeverage dispenser valve arrangementUS4275726Dec 4, 1978Jun 30, 1981Dr. Eduard Fresenius, Chemisch-Pharmazeutische Industrie Kg Apparatebau KgApparatus for fluid balancing under sterile conditionsUS4276023Sep 28, 1979Jun 30, 1981Stryker CorporationFluid flow control consoleUS4278078Feb 26, 1980Jul 14, 1981Stryker CorporationLavage handpieceUS4282867Dec 5, 1979Aug 11, 1981Christopher EdwardCleaning fluid injection deviceUS4289158Mar 5, 1979Sep 15, 1981C. R. Bard, Inc.Suction control apparatusUS4290454Jun 30, 1980Sep 22, 1981Shetler Earl BBack flow valveUS4294251Jul 21, 1980Oct 13, 1981Greenwald A SethMethod of suction lavageUS4301971 *Aug 23, 1979Nov 24, 1981Cornelius Engineering Center, Inc.Electrically-driven spray gun* Cited by examinerNon-Patent CitationsReference1"Introducing the multi-functional instrument for virtually every laparoscopic case", USSC, Auto Suture Company, Copyright 1992, 556529 pp. 10M Jul. 1992.2"Simultaneous pulsatile lavage and/or irrigation with suction . . . ", Pulsatile Lavage Debridement System, brochure No. 82-010-5150-0146/2.5M CISS Zimmer, Inc., Snyder Labs Inc, 1982.33M Fluid Control System, For Precise Control of all Arthroscopic Procedures, 70-2008-5458-9, 1992 3M.4A Fully Integrated Laparoscopic Irrigation and Instrumentation System, Cabot Medical, Langhorne, PA Apr. 1992, 10M, L/T (4 sheets).5Advances In Pelviscopy, The Irrigation Pump System, Cabot Medical, Langhorne, PA Apr. 1990 (3 sheets).6Arthur D. Little (Sword) Sep. 8, 1992 letter to Albert Solis.7Arthur D. Little (Tsals) Dec. 17, 1992 letter to John Skreenock.8Arthur D. Little (Tsals) Dec. 8, 1992 letter to Davol.9Arthur D. Little (Tsals) Jan. 28, 1993 letter to John Skreenock.10Arthur D. Little (Tsals) Nov. 12, 1992 fax to John Skreenock (Davol).11Bard (Brad Cilley) Oct. 16, 1992 fax to John Skreenock.12Copy of Ethicon, Pfizer/Valley Lab and Bard/Davol photos (10 photos) Jun. 25, 1993.13Count On US (Introducing Over 100 Precision Crafted Quality Endosurgery Instruments), Davis+Geck, 1993.14Davol (Silva) Jan. 4, 1993 letter to Arthur D. Little.15Davol, Arthro-Flo High-Flo Irrigator, Bard, OP-AF0015000 Aug. 1992 5M C.R. Bard Inc. Cranston, RI.16Davol, Arthro-Flo(R) , Instructions For Use, 038657-0 901R C.R. Bard, Inc. Cranston RI, Jan. 1990.17Davol, Instructions for Use, Simpulse-(TM) Suction/Irrigator, BARD, 034089-0 (2 sheets) Jan. 1985.18Davol-Endo-Flo(TM) Irrigator, Bard, Davol Inc.; instruction booklet #041002-0, 9011R, Nov. 1990.19Davol's Answers to Plaintiff's First Set of Interrogatories dated Jan. 7, 1996.20Davol's Supplemental Answers to Plaintiff's First Set of Interrogatories dated Feb. 14, 1997.21Deposition of Harrith M. Hasson, pp.1-281 with index pages 1-32 dated Feb. 13, 1998.22Deposition of Roger E. Darois, pp. 1-177, with index pp. 1-19 and correction and signature papers 1-3, dated May 7, 1997.23Essar(R) Suction Irrigator, Why do I need the Essar Suction Irrigator? Stewart Research, Inc. believed published before Apr. 19, 1993.24InteliJET(TM) , Fluid Management System User' Manual, Smith & Nephew Dyonics Inc., copyright 1992, PN1060170.25KLI DeCherney Hysteroscopy Pump believed published before Apr. 19, 1993.26Marlow-Unique Products for Advanced Operative Laparoscopy 790-5M.27Memorandum Opinion and Order Denying Motion for Judgment as a Matter of Law dated May 26, 1999.28Nezhat-Dorsey(TM) Hydro-Dissection(TM) Information Booklet Installation/Operating Instructions for "Quick-Disconnect" Probe Tips (2 sheets) believed published before Apr. 19, 1993.29Rule 26 (a) (2) Expert Report of Roger E. Daris Relating to Davol's Defenses to Styrker's Infringment Claims Under the '402 Patent dated Oct. 30, 1997 including exhibits A-D.30Rule 26 (a) (2) Rebuttal Expert Report of Dr. Harrith M. Hasson, M.D. Relating to Stryker's Infringement of United States Patent No. 5 391 145 and United States Patent No. 5 586 977, dated Dec. 8, 1997.31Rule 26(a) (2) Expert Report of Dr. Harrith M: Hasson Relating to Davol's Defenses to Stryker's Infringement Claims Under the '402 Patent dated Oct. 29, 1997 including Exhibits A-D.32Ruling on Claim Construction Disputes dated Apr. 24, 1998.33Saline Pump Development Program, Davol Inc., Jan. 18, 1993, Cambridge, MA.34Saline Scroll Pump Development Program.35Scroll Technology in Medical Products.36Select One-(TM) Minimal Access Surgery System, Introducing theVAC-(TM) Handcontrolled Suction Irrigation Instrument, ConMed Aspen Surgical Systems, Conmed Jul. 1992, 10M.37Select One-(TM) Minimal Access Surgery System, The Modular Instrument System for Surgical Endoscopy, SelectOne System by ConMed, Aspen Surgical Systems believed published before Apr. 19, 1993.38Suction/Irrigator Is No Longer An Issue, Hydro-Dissection System, 556529 PP ICM Jul. 1992, Karl Stroz Gmbh & Co. Tuttlengen, West Germany.39Teltech Nov. 2, 1992 search for John Skreenock re Scroll Pumps.40Trial-vol. IV. IV, Nov. 17, 1998: (Hope-Cross; Darois-direct, voir dire, Cross) multi-channel fiber-optic rotary multipage 35-43 (actual pp. 524-785).41Trial-vol. V, Nov. 18, 1998 (Darois-direct) multipage 623-785; actual pp. 3-44.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8425479 *Jun 22, 2009Apr 23, 2013Thean Aik Derek HoOral debris removal deviceUS8840595 *Sep 17, 2009Sep 23, 2014Arthrex, Inc.Removable suction assembly for medical handpiecesUS8840596 *May 19, 2010Sep 23, 2014Arthrex, Inc.Removable suction assembly for medical handpiecesUS20110065997 *Sep 17, 2009Mar 17, 2011James HamerRemovable suction assembly for medical handpiecesUS20110066122 *May 19, 2010Mar 17, 2011Stanton Kevin JRemovable suction assembly for medical handpiecesUS20110202021 *Jun 22, 2009Aug 18, 2011Thean Aik Derek HoOral debris removal device* Cited by examinerClassifications U.S. Classification604/35, 604/246, 604/902, 601/155, 604/153, 601/161International ClassificationA61M3/02, A61M3/00Cooperative ClassificationA61M3/0258, Y10S604/902, A61M2205/8206, A61M3/025, A61M1/0037, A61M1/0064European ClassificationA61M1/00K4, A61M1/00H4, A61M3/02D8BLegal EventsDateCodeEventDescriptionJan 27, 2015FPExpired due to failure to pay maintenance feeEffective date: 20141205Dec 5, 2014LAPSLapse for failure to pay maintenance feesJul 18, 2014REMIMaintenance fee reminder mailedMay 7, 2010FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services