CN116115837A

CN116115837A - Lumbar cistern reservoir cerebrospinal fluid drainage and medicine injection device

Info

Publication number: CN116115837A
Application number: CN202211563159.5A
Authority: CN
Inventors: 黄瑛; 姜小波; 罗云
Original assignee: Foshan Special Medical Catheter Co ltd
Current assignee: Foshan Special Medical Catheter Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-05-16

Abstract

The invention discloses a drainage and drug injection device for cerebrospinal fluid of a reservoir of a lumbar cistern, which comprises an injection seat, a self-sealing elastic piece and a catheter. The injection seat is provided with an injection cavity and is suitable for being buried under the skin; the self-sealing elastic piece is arranged in the injection cavity; the catheter is detachably connected with the injection seat and is communicated with the injection cavity, and the catheter is suitable for being implanted into the subarachnoid space. The invention provides a lumbar cistern reservoir cerebrospinal fluid drainage and drug injection device, which realizes clinical operations such as cerebrospinal fluid drainage and intrathecal drug administration, improves the convenience of operation, simplifies the structure and saves the manufacturing cost. The invention creates a new treatment mode of cerebrospinal fluid drainage and intrathecal administration.

Description

Lumbar cistern reservoir cerebrospinal fluid drainage and medicine injection device

Technical Field

The invention relates to the technical field of medical appliances, in particular to a lumbar cistern reservoir cerebrospinal fluid drainage and injection device.

Background

In clinical medical work of neurosurgery, it is often necessary to perform a puncture in the lumbar cistern and to perform clinical operations such as drainage and administration of cerebrospinal fluid, particularly for patients with chronic diseases of the central nervous system, for a long period of time.

The existing external drainage device for the lumbar cistern comprises a first drainage tube, a blocking clamp, an L-shaped pressure measuring tube, a second drainage tube, an anti-suck-back bottle and a drainage bag; the first drainage tube comprises a thin drainage tube, a transition tube and a thick drainage tube which are integrally formed, and a medicine injection tube is arranged on the thin drainage tube; the blocking clamp is used for clamping the thick drainage tube and blocking a pipeline of the thick drainage tube when the medicine injection tube works; the L-shaped pressure measuring tube is sleeved outside the first drainage tube during pressure measurement, so that the first drainage tube forms an L shape attached to the inner wall of the L-shaped pressure measuring tube at the transition tube, and the open end of the thick drainage tube is communicated with the outside atmosphere during pressure measurement; one end of the second drainage tube is detachably connected with the opening end of the thick drainage tube; the inlet of the anti-suck-back bottle is communicated with the other end of the second drainage tube; the inlet of the drainage bag is communicated with the outlet of the anti-suck-back bottle. However, the lumbar cistern drainage and medicine injection device has more parts, more complex structure and relatively higher cost, and the medicine injection tube is a branch of the drainage tube, and the drainage and the feeding are carried out at different positions, so that the operation is inconvenient.

Disclosure of Invention

The invention mainly aims to provide a drainage and medicine injection device for cerebrospinal fluid of a reservoir of a lumbar cistern, which aims at realizing clinical operations such as drainage and medicine administration of cerebrospinal fluid, simplifying the drainage device, saving manufacturing cost and improving the convenience of operation.

In order to achieve the above purpose, the invention provides a drainage and drug injection device for cerebrospinal fluid of a reservoir of a lumbar cistern, comprising:

the injection seat is provided with an injection cavity and is suitable for being buried under the skin;

the self-sealing elastic piece is arranged in the injection cavity; and

a catheter detachably connected to the injection seat and in communication with the injection lumen, the catheter being adapted for implantation into the subarachnoid space.

Optionally, the catheter is locked with the injection seat by a locking clip.

Optionally, the drainage and drug injection device further comprises a catheter guiding puncture needle, wherein the catheter guiding puncture needle comprises a core needle and a needle tube movably sleeved on the end part of the core needle, the catheter guiding puncture needle is used for penetrating from the waist to a preset position after an anesthetized patient so as to establish a channel, and after the core needle is withdrawn, the catheter is penetrated to the subarachnoid space along the needle tube.

Optionally, the drainage and drug injection device further comprises a guide wire, wherein the guide wire comprises a core wire and a wire winding arranged on the core wire, and the guide wire is movably inserted into the catheter and is used for supporting the catheter when the catheter is conveyed to the subarachnoid space along the needle tube.

Optionally, the drainage and drug injection device further comprises a tunneling needle for establishing a subcutaneous tunnel and pulling the catheter along the subcutaneous tunnel to the injection site.

Optionally, the drainage and injection device further comprises a non-invasive injection needle for penetrating the self-sealing elastic member and extending into the injection cavity for drainage or administration of cerebrospinal fluid.

Optionally, the atraumatic injection needle comprises a connecting seat, an injection needle tube communicated with the connecting seat and a protective sleeve sleeved on the injection needle tube.

Optionally, the injection seat is provided with a penetration limiter for limiting the penetration of the injection needle through the injection seat when the injection needle penetrates the self-sealing elastic member.

Optionally, the atraumatic injection needle is of a curved or straight configuration, and the bevel of its needle tip is parallel to the axis of the needle cannula.

Optionally, the catheter has a drug delivery end, and the drug delivery end of the catheter is provided with a plurality of drug delivery holes uniformly arranged at intervals.

In the technical scheme of the invention, the drainage and medicine injection device comprises an injection seat, a self-sealing elastic piece and a catheter; the injection seat is provided with an injection cavity and is suitable for being buried under the skin; the self-sealing elastic piece is arranged in the injection cavity; the catheter is detachably connected with the injection seat and is communicated with the injection cavity, and the catheter is suitable for being implanted into the subarachnoid space.

It can be appreciated that the overall structure of the drainage and drug infusion device of the present invention is less parts and manufacturing costs are lower than those of the existing drainage and drug infusion devices. In the medical treatment process, the catheter implanted into the subarachnoid space is connected with the implanted injection seat buried under the skin, and then the self-sealing elastic piece of the injection seat can be penetrated by using the atraumatic injection needle to conduct clinical operations such as drainage or drug administration of cerebrospinal fluid, and the operation is simpler. And the self-sealing elastic piece can automatically recover to the original state and close the needle hole after the injection needle is extracted, so that outflow of liquid medicine or cerebrospinal fluid can be effectively avoided.

In addition, the liquid storage bag is implanted in the lumbar cistern by the device for draining and injecting the liquid in the lumbar cistern, which is disclosed by the invention, can facilitate the operations such as drainage of the liquid in the lumbar cistern, detection of the liquid in the cerebrospinal, intrathecal administration and the like, avoid the trouble of repeated puncturing operation, reduce the pain of a patient and simultaneously reduce the treatment cost. The invention creates a new treatment mode of cerebrospinal fluid drainage and intrathecal administration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a lumbar reservoir cerebrospinal fluid drainage and drug injection device according to the invention;

FIG. 2 is a schematic view of an injection seat in an embodiment of the drainage and injection device of cerebrospinal fluid in the reservoir of the lumbar according to the invention;

FIG. 3 is a schematic view of a catheter in an embodiment of the drainage and injection device of the spinal fluid in the reservoir of the lumbar cistern according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

FIG. 5 is a schematic view of a catheter-guided needle in one embodiment of the lumbar reservoir cerebrospinal fluid drainage and injection device of the invention;

FIG. 6 is a schematic diagram of a guide wire in an embodiment of the lumbar reservoir cerebrospinal fluid drainage and drug injection device of the invention;

FIG. 7 is a schematic view of a tunnel needle in an embodiment of the drainage and injection device of cerebrospinal fluid in the reservoir of the lumbar according to the invention;

FIG. 8 is a schematic view of an injection needle in an embodiment of the lumbar reservoir cerebrospinal fluid drainage and injection device according to the invention;

fig. 9 is a schematic view of the structure of an injection needle in another embodiment of the drainage and injection device for cerebrospinal fluid in the lumbar cistern according to the invention.

Reference numerals illustrate:

10. an injection seat; 20. a self-sealing elastic member; 30. a conduit; 40. a locking clip; 10a, injection cavity; 11. a puncture limiting member; 50. a catheter-guided puncture needle; 51. a core needle; 52. a needle tube; 60. a guide wire; 61. a core wire; 62. winding wires; 70. a tunnel needle; 71. a traction end; 72. a piercing end; 80. a atraumatic injection needle; 81. a connecting seat; 82. an injection needle tube; 83. a protective sleeve; 31. a drug delivery end; 30a, drug administration holes; 11a, a suture needle hole.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a lumbar reservoir liquid storage bag cerebrospinal fluid drainage and drug injection device, which is suitable for clinical operations such as cerebrospinal fluid drainage or drug administration.

Referring to fig. 1 to 3, in an embodiment of the present invention, the drainage and injection device for cerebrospinal fluid of the lumbar cistern comprises an injection seat 10, a self-sealing elastic member 20 and a catheter 30; the injection seat 10 is provided with an injection cavity 10a, and the injection seat 10 is suitable for being buried under the skin; the self-sealing elastic member 20 is provided in the injection cavity 10 a; a catheter 30 is detachably connected to the injection site 10 and communicates with the injection lumen 10a, the catheter 30 being adapted for implantation into the subarachnoid space.

In this embodiment, the injection seat 10 and the catheter 30 may be made of medical polymer materials, the self-sealing elastic member 20 may be made of medical rubber with a certain elasticity, and the materials of the components are not limited herein.

Referring to fig. 1 to 4, the injection seat 10 and the guide tube 30 can be locked by a locking clip 40 to achieve a detachable connection. The catheter 30 has an administration end 31, i.e., an end extending into the subarachnoid space, and the administration end 31 of the catheter 30 is provided with a plurality of administration holes 30a uniformly spaced apart.

As shown in fig. 5, in this embodiment, the drainage and injection device may further include a catheter guidance puncture needle 50, where the catheter guidance puncture needle 50 includes a core needle 51 and a needle tube 52 movably sleeved on an end of the core needle 51, and the catheter guidance puncture needle 50 is used for puncturing from a waist to a predetermined position after an anesthetized patient to establish a channel, and after the core needle 51 is withdrawn, the catheter 30 is passed along the needle tube 52 to a subarachnoid space. Wherein the catheter introducer needle 50 can be a spoon needle, as not limited herein.

It can be appreciated that the overall structure of the drainage and drug infusion device of the present invention is less parts and manufacturing costs are lower than those of the existing drainage and drug infusion devices. In the medical treatment process, the catheter 30 implanted in the subarachnoid space is connected with the implanted injection seat 10 buried under the skin, and then the self-sealing elastic element 20 of the injection seat 10 is penetrated by the atraumatic injection needle 80 to conduct clinical operations such as drainage or administration of cerebrospinal fluid, and the operation is simpler. In addition, the self-sealing elastic member 20 can automatically recover and close the needle hole after the atraumatic injection needle 80 is withdrawn, and can effectively avoid outflow of liquid medicine or cerebrospinal fluid.

To facilitate delivery of the catheter 30 to the subarachnoid space, as shown in fig. 6, in one embodiment, the drainage and drug delivery device may further include a guidewire 60, the guidewire 60 including a core wire 61 and a wire wrap 62 disposed over the core wire 61, the guidewire 60 being movably inserted into the catheter 30 for supporting the catheter 30 as the catheter 30 is advanced along the needle cannula 52 to the subarachnoid space.

Further, as shown in fig. 7, in the present embodiment, the drainage and injection device may further include a tunneling needle 70 having a traction end 71 and a puncture end 72, wherein the tunneling needle 70 is used to establish a subcutaneous tunnel and to draw the catheter 30 to the injection site 10 along the subcutaneous tunnel. In this way, it is convenient for the practitioner to pull the catheter 30 to the injection site 10 for subsequent connection of the catheter 30 to the injection site 10.

Referring to fig. 8 and 9, in some embodiments, the drainage and administration device may further include a atraumatic needle 80, the atraumatic needle 80 being configured to penetrate the self-sealing elastic member 20 and into the injection lumen 10a for drainage or administration of cerebrospinal fluid. The atraumatic injection needle 80 comprises a connecting seat 81, an injection needle tube 82 communicated with the connecting seat 81, and a protective sleeve 83 sleeved on the injection needle tube 82.

In this embodiment, the atraumatic injection needle 80 may be a curved or straight structure, so as to reduce the damage to the self-sealing elastic member 20 of the injection seat 10 during puncturing, further improve the tightness of the injection seat 10, and avoid leakage.

Referring to fig. 1 to 9, the drainage and injection device for cerebrospinal fluid in the reservoir of the lumbar cistern according to the present invention may be used by referring to the following steps:

1) Firstly, the guide wire 60 is sent into the catheter 30 for standby;

2) After the patient is anesthetized, the catheter guidance puncture needle 50 is pierced from the waist of the patient to a predetermined position, and the core needle 51 is withdrawn;

3) Feeding the catheter 30 with the guidewire 60 along the needle cannula 52 of the catheter introducer needle 50 into the subarachnoid space;

4) A needle tube 52 for withdrawing the catheter introducer needle 50 from the tail of the catheter 30;

5) Then making a subcutaneous pocket at a certain distance from the puncture point according to the actual situation, wherein the depth of the subcutaneous pocket is generally 5-10 mm from the body surface, and then placing the injection seat 10 into the subcutaneous pocket;

6) Withdrawing the guidewire 60 from the catheter 30 and then using the tunneling needle 70 to pull the catheter 30 along the subcutaneous tunnel to the injection site 10;

7) Cutting off the excess catheter 30, and locking the catheter 30 with the injection seat 10 by using the locking clip 40;

8) Stitching the pouch;

9) The self-sealing elastic member 20 of the subcutaneous injection seat 10 is pierced with a dedicated atraumatic injection needle 80 and inserted into the injection cavity 10a, as required for treatment, and then drainage or administration of cerebrospinal fluid is performed.

Based on the above-described embodiments, further referring to fig. 1 and 2, the injection seat 10 may further be provided with a penetration limiter 11 for limiting the penetration of the atraumatic needle 80 into the injection seat 10 when the atraumatic needle 80 penetrates the self-sealing elastic member 20. Thus, the phenomenon of leakage of the liquid caused by the puncture of the injection seat 10 by the atraumatic injection needle 80 can be avoided.

Wherein, the puncture limiter 11 can be plate-shaped, can be adhered to the bottom of the injection seat 10 and enclose an injection cavity 10a with the inner cavity of the injection seat 10, and the self-sealing elastic member 20 can be arranged on the injection cavity 10a

A portion. In addition, as shown in fig. 1, a needle hole 11a may be formed 5 at the outer end of the penetration stopper 11 or the outer end of the injection seat 10 so as to fix the injection seat 10 to the skin.

The foregoing description is only of the alternative embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the description and drawings

Transformation, or direct/indirect use in other related technical fields are included in the scope of patent protection of the present invention.

Claims

1. The utility model provides a lumbar cistern reservoir cerebrospinal fluid drainage and injection device which characterized in that, drainage and injection device includes:

the self-sealing elastic piece is arranged in the injection cavity; and

2. The lumbar cistern cerebrospinal fluid drainage and injection device according to claim 1, wherein said catheter is locked to said injection seat by a locking clip.

3. The lumbar cistern reservoir cerebrospinal fluid drainage and injection device according to claim 1, further comprising a catheter guide puncture needle comprising a core needle and a needle cannula movably sleeved on an end of said core needle, said catheter guide puncture needle being adapted to penetrate from the waist to a predetermined position after an anesthetized patient to establish a passageway for said catheter to pass along said needle cannula to the subarachnoid space after said core needle is withdrawn.

4. The lumbar cistern reservoir cerebrospinal fluid drainage and injection device according to claim 3, further comprising a guidewire comprising a core wire and a wire wrap disposed on said core wire, said guidewire being movably inserted within said catheter for supporting said catheter as it is passed along said needle cannula to the subarachnoid space.

5. The lumbar cistern reservoir cerebrospinal fluid drainage and injection device according to claim 1, further comprising a tunneling needle for establishing a subcutaneous tunnel and drawing said catheter along said subcutaneous tunnel to said injection site.

6. The lumbar cistern reservoir cerebrospinal fluid drainage and injection device according to claim 1, further comprising a atraumatic injection needle for penetrating said self-sealing elastic member and extending into said injection cavity for drainage or administration of cerebrospinal fluid.

7. The lumbar cistern cerebrospinal fluid drainage and injection device according to claim 6, wherein said atraumatic injection needle comprises a connecting seat, an injection needle tube in communication with said connecting seat, and a protective sleeve sleeved on said injection needle tube.

8. The lumbar reservoir cerebrospinal fluid drainage and administration device according to claim 6, wherein said injection seat is provided with a puncture limiter for limiting said injection needle from puncturing said injection seat when said injection needle pierces said self-sealing elastic member.

9. The lumbar cistern cerebrospinal fluid drainage and injection device according to claim 7, wherein said atraumatic injection needle is of a curved or straight configuration and the bevel of its needle tip is parallel to the axis of the needle tube.

10. The lumbar cistern reservoir cerebrospinal fluid drainage and injection device according to claim 1, wherein said catheter has an administration end, said administration end of said catheter having a plurality of evenly spaced administration holes.