Source: https://insight.rpxcorp.com/pat/US20190321550A1
Timestamp: 2020-07-03 13:58:25
Document Index: 326840436

Matched Legal Cases: ['art.\n7', 'art.\n11', 'art.\n12', 'art.\n17', 'Application No. 2010', 'Application No. 2010']

Patent US 20190321550A1
US 20190321550A1
a hollow elongated outer member in which the inner needle is positioned, the hollow elongated outer member being movable in a distal direction relative to the inner needle after puncturing the patient'"'"'s blood vessel with the sharp needlepoint to position the hollow elongated outer member at a desired position in the blood vessel, the hollow elongated outer member possessing a proximal portion;
an elongated contact member possessing a surface and configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle;
an engaging section engaging the elongated contact member for restricting movement of the elongated contact member and possessing a surface that contacts the surface of the elongated contact member before the hollow elongated outer member is moved in the distal direction relative to the inner needle; and
the engaging section disengaging the elongated contact member while the hollow elongated outer member is moved in the distal direction relative to the inner needle so that the surface of the elongated contact member moves away from the surface of the engaging section.
2. The indwelling assembly according to claim 1, wherein the surface of the engaging section is a lower surface of a rib, and wherein the surface of the elongated contact member is an upper surface of the elongated contact member.
3. The indwelling assembly according to claim 1, wherein the surface of the engaging section is a surface of a rib.
4. The indwelling assembly according to claim 1, wherein the engaging section is a rib.
5. The indwelling assembly according to claim 1, wherein the elongated contact member possesses a recessed part that overlies the hollow elongated outer member.
6. The indwelling assembly according to claim 5, wherein the recessed part of the elongated contact member is a first recessed part, the first recessed part facing a second recessed part, the hollow elongated outer member being positioned between the first recessed part and the second recessed part.
7. The indwelling assembly according to claim 6, wherein the second recessed part is provided in a grip member of the indwelling assembly.
8. An indwelling assembly comprising:
an elongated contact member overlying at least a portion of the hollow elongated outer member and configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle;
an engaging section that is separate from the elongated contact member and that includes a first part on one lateral side of the elongated contact member and a second part on an opposite lateral side of the elongated contact member to restrict lateral movement of the elongated contact member relative to the engaging section before the hollow elongated outer member is moved in the distal direction relative to the inner needle; and
the elongated contact member being configured to move away from the hollow elongated outer member as the hollow elongated outer member moves in the distal direction relative to the inner needle.
9. The indwelling assembly according to claim 8, wherein the elongated contact member possesses a recessed part that overlies the hollow elongated outer member.
10. The indwelling assembly according to claim 9, wherein the recessed part of the elongated contact member is a first recessed part, the first recessed part facing a second recessed part, the hollow elongated outer member being positioned between the first recessed part and the second recessed part, and wherein the movement of the elongated contact member away from the hollow elongated outer member as the hollow elongated outer member moves in the distal direction relative to the inner needle results in the first recessed part moving away from the second recessed part.
11. The indwelling assembly according to claim 9, wherein the recessed part of the elongated contact member is a first recessed part, the first recessed part facing a second recessed part, the hollow elongated outer member being held between the first recessed part and the second recessed part.
12. The indwelling assembly according to claim 8, wherein the engaging section is a grip member and the first and second parts of the engaging section are two upstanding wall sections of the grip member.
13. An indwelling assembly comprising:
an elongated contact member configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle;
the elongated contact member including a distal end portion, the distal end portion of the elongated contact member being centrally positioned between two upper surfaces positioned on opposite lateral sides of the centrally positioned distal end portion of the elongated contact member, the two upper surfaces forming a part of the indwelling assembly different from the elongated contact member; and
the centrally positioned distal end portion of the elongated contact member possessing an upper surface positioned above the two upper surfaces positioned on opposite lateral sides of the centrally positioned distal end portion of the elongated contact member.
14. The indwelling assembly according to claim 13, further comprising a grip member that includes a bottom plate and two spaced apart side walls upstanding from the bottom plate, one of the upper surfaces being an upper surface of one of the side walls, and the other one of the upper surfaces being an upper surface of the other side wall.
15. The indwelling assembly according to claim 13, wherein the elongated contact member possesses a recessed part that overlies the hollow elongated outer member.
16. The indwelling assembly according to claim 15, wherein the recessed part of the elongated contact member is a first recessed part, the first recessed part facing a second recessed part, the hollow elongated outer member being positioned between the first recessed part and the second recessed part.
17. The indwelling assembly according to claim 16, wherein the second recessed part is provided in a grip member of the indwelling assembly.
18. The indwelling assembly according to claim 13, wherein the centrally positioned distal end portion of the elongated contact member is a finger hook projection engaged by a finger of a user while moving the hollow elongated outer member in the distal direction relative to the inner needle.
This application is a continuation of U.S. application Ser. No. 16/156,253 filed Oct. 10, 2018, which is a continuation of U.S. application Ser. No. 15/616,299 filed Jun. 7, 2017, now U.S. Pat. No. 10,188,790, which is a continuation of U.S. application Ser. No. 15/083,943 filed Mar. 29, 2016, now U.S. Pat. No. 9,700,671, which is a continuation of U.S. application Ser. No. 14/583,410 filed Dec. 26, 2014, now U.S. Pat. No. 9,352,128, which is a continuation of U.S. application Ser. No. 14/497,364 filed Sep. 26, 2014, now U.S. Pat. No. 9,265,915, which is a continuation of U.S. application Ser. No. 13/627,385 filed Sep. 26, 2012, now U.S. Pat. No. 8,876,773, which is a continuation of International Application No. PCT/JP2011/057010 filed on Mar. 23, 2011, and claims priority to Japanese Patent Application No. 2010-073414 filed on Mar. 26, 2010 and Japanese Patent Application No. 2010-122413 filed on May 28, 2010, the entire content of each of which are incorporated herein by reference.
The present invention generally relates to an indwelling assembly and a method of using an indwelling assembly.
In performing infusion into a patient or in other similar situations, an indwelling needle connected to an infusion line is made to puncture a patient'"'"'s blood vessel and indwell in situ, so that the desired operation can be conducted.
At the time of puncture of a patient'"'"'s blood vessel by the indwelling needle, the puncturing operation is conducted in an assembled state wherein the inner needle is inserted in the outer needle and the needlepoint of the inner needle protrudes from the distal end of the outer needle.
Meanwhile, as a catheter which is longer than the above-mentioned peripheral vein catheter and is placed indwelling into a patient'"'"'s blood vessel for dosing the patient with an infusion, for example, a central vein catheter, a PICC (Peripherally Inserted Central Catheter), a midline catheter and the like.
In order to put such a catheter indwelling in a patient'"'"'s blood vessel, first, an introduction needle is made to puncture the patient'"'"'s blood vessel. The puncture by the introduction needle is conducted by using the outer needle as the introduction needle. Then, the catheter is fed into the introduction needle, which places the catheter indwelling in the patient.
According to one aspect, an indwelling assembly comprises: an inner needle having a sharp needlepoint at a distal end to puncture a blood vessel of a patient when the indwelling assembly is moved toward the patient, an inner needle hub fixed to a proximal portion of the inner needle, a hollow elongated outer member in which the inner needle is positioned, with the hollow elongated outer member being movable in the distal direction relative to the inner needle after puncturing the patient'"'"'s blood vessel with the sharp needlepoint to position the hollow elongated outer member at a desired position in the blood vessel, an outer member hub fixed to a proximal portion of the hollow elongated outer member, and an elongated contact member possessing a surface and configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle. An engaging section engages the elongated contact member for restricting movement of the elongated contact member and possesses a surface that contacts the surface of the elongated contact member before the hollow elongated outer member is moved in the distal direction relative to the inner needle. The engaging section disengages the elongated contact member while the hollow elongated outer member is moved in the distal direction relative to the inner needle so that the surface of the elongated contact member moves away from the surface of the engaging section.
In accordance with another aspect, an indwelling assembly comprises: an inner needle having a sharp needlepoint at a distal end to puncture a blood vessel of a patient when the indwelling assembly is moved toward the patient; an inner needle hub fixed to the proximal portion of the inner needle; a hollow elongated outer member in which the inner needle is positioned, with the hollow elongated outer member being movable in a distal direction relative to the inner needle after puncturing the patient'"'"'s blood vessel with the sharp needlepoint to position the hollow elongated outer member at a desired position in the blood vessel; an outer member hub fixed to the proximal portion of the hollow elongated outer member; an elongated contact member overlying at least a portion of the hollow elongated outer member and configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle; and an engaging section that is separate from the elongated contact member and that includes a first part on one lateral side of the elongated contact member and a second part on an opposite lateral side of the elongated contact member to restrict lateral movement of the elongated contact member relative to the engaging section before the hollow elongated outer member is moved in the distal direction relative to the inner needle. The elongated contact member is configured to move away from the hollow elongated outer member as the hollow elongated outer member moves in the distal direction relative to the inner needle.
According to another aspect, an indwelling assembly comprises an inner needle having a sharp needlepoint at a distal end to puncture a blood vessel of a patient when the indwelling assembly is moved toward the patient, an inner needle hub fixed to a proximal portion of the inner needle, a hollow elongated outer member in which the inner needle is positioned, with the hollow elongated outer member being movable in a distal direction relative to the inner needle after puncturing the patient'"'"'s blood vessel with the sharp needlepoint to position the hollow elongated outer member at a desired position in the blood vessel, an outer member hub fixed to the proximal portion of the hollow elongated outer member, and an elongated contact member configured to contact an intermediate portion of the hollow elongated outer member located between proximal and distal ends of the hollow elongated outer member when the indwelling assembly is moved toward the patient to puncture the blood vessel of the patient with the sharp needlepoint of the inner needle. The elongated contact member includes a distal end portion that is centrally positioned between two upper surfaces positioned on opposite lateral sides of the centrally positioned distal end portion of the elongated contact member, wherein the two upper surfaces form a part of the indwelling assembly different from the elongated contact member. The centrally positioned distal end portion of the elongated contact member possesses an upper surface positioned above the two upper surfaces positioned on opposite lateral sides of the centrally positioned distal end portion of the elongated contact member.
FIGS. 11 a and 11 b are perspective views illustrating an example of a method of using the indwelling needle assembly shown in FIG. 6.
By way of example, the outer needle 2 has a certain degree of flexibility. For example, the material constituting the outer needle 2 is a resin material, such as a flexible resin material. Examples of the resin material include fluoro-resins such as PTFE, ETFE, PFA, etc., olefin reins such as polyethylene, polypropylene, etc. or mixtures thereof, polyurethane, polyesters, polyam ides, polyether-nylon resins, mixtures of the olefin resin with an ethylene-vinyl acetate copolymer, and the like.
By way of example, this helps ensure that at the time of moving the outer needle 2 in the distal direction in putting the outer needle 2 indwelling in a blood vessel, it is relatively ensured that even if the distal portion of the pressing member 6 abuts on a predetermined part of the patient, the pressing member 6 is curved or bent at its intermediate portion, whereby interference between the pressing member 6 and the patient'"'"'s predetermined part can be avoided. As a result, the outer needle 2 can be moved relatively easily and smoothly. For example, in the case of puncturing a patient'"'"'s skin from the inside of an upper arm part and inserting the distal end of the outer needle 2 to a position immediately on the operator'"'"'s side of the patient'"'"'s side part, a gradual movement of the pressing member 6 in the distal direction may cause a distal portion of the pressing member 6 to abut on a knot of muscle corresponding to the biceps muscle of arm. By way of example, in such a situation, the pressing member 6 would not be an obstacle, since it is curved or bent at its intermediate portion.
In addition, the layout of the two small material thickness sections 611 is not limited. By way of example, in this embodiment, a setting of L1 <L2 is adopted, where L1 (see FIG. 21) is the length in the longitudinal direction between the distal end of the pressing member 6 and the small material thickness section 611 on the distal side, and L2 (see FIG. 21) is the length in the longitudinal direction between the small material thickness section 611 on the distal side and the small material thickness section 611 on the proximal side.
Subsequently, as shown in FIG. 20, the second distal-most finger hook projection 62 is pushed in the distal direction by the index finger, to move the outer needle 2 in the distal direction, and such an operation is sequentially repeated to insert a distal portion of the outer needle 2 to a target position in the blood vessel. For example, when the pressing member comes into contact with the patient'"'"'s predetermined part, the pressing member 6 is curved or bent at its intermediate portion, as above-mentioned. As a result, the pressing member 6 would not be an obstacle, and the outer needle 2 can be moved relatively easily and smoothly.
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Method Involving Use Of An Assembled Indwelling Assembly
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Method Of Indwelling A Needle Assembly
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