CN216603670U

CN216603670U - Coaxial trocar

Info

Publication number: CN216603670U
Application number: CN202122668210.6U
Authority: CN
Inventors: 温林春; 徐璐; 赵亮; 顾丽英
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-05-27
Anticipated expiration: 2031-11-03

Abstract

The utility model relates to the field of medical instruments, in particular to a coaxial trocar, which comprises a sleeve, a puncture needle and a liquid storage tube, wherein the puncture needle is inserted in the sleeve, the interior of the puncture needle is communicated, the front end of the sleeve is provided with a side hole, two sides of the outer wall of the sleeve are provided with needle wings, the side wall of the sleeve is connected with a hose assembly, the rear end of the sleeve is detachably connected with a piston, the other end of the hose assembly is connected with the liquid storage tube, a liquid separation plate is arranged in the liquid storage tube and divides the liquid storage tube into a symmetrical channel A and a channel B along the longitudinal section of the liquid storage tube, the upper ends of the channel A and the channel B are respectively communicated with an injection side tube, and the upper end of the injection side tube is connected with an injector.

Description

Coaxial trocar

Technical Field

The utility model relates to the field of medical instruments, in particular to a coaxial trocar.

Background

For a long time, no matter the transfusion in a ward or an operating room needs to use the coaxial trocar, because of simple and convenient operation, the outer trocar for transfusion left in the blood vessel greatly reduces the discomfort of a patient, and meanwhile, the outer trocar leaves a passage for other medical instruments to enter the tumor.

At present, the needle biopsy and the ablation are carried out clinically by adopting a step-by-step strategy, and a puncture needle core is pulled out after a coaxial trocar consisting of a puncture needle and an outer trocar enters the interior of a tumor; then the biopsy gun enters the interior of the tumor through the outer cannula needle to obtain the living soft tissue, and then the biopsy gun is pulled out. When the ablation operation is done, some medicines usually need to be injected, the side of the outer trocar on the market is usually provided with an injection side tube for injecting medicines, but most of the current injection side tubes are directly connected with an injector without being sealed, if the outer trocar is inclined, the injected medicines easily flow out from the injection side tube or the outer cannula needle inlet without flowing into the human body, the medicine absorption of a patient is influenced, the medicine waste is caused, besides, the injection side tube is required to inject the medicines manually, the operation is more troublesome, and the flow can not be adjusted.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the coaxial trocar provided by the utility model can be used for injecting various medicines simultaneously, is convenient to inject medicines, prevents medicine waste caused by backflow of the medicines, can be used for regulating flow, is simple to operate, has practical functions, and is very worthy of popularization.

In order to achieve the purpose, the technical solution of the utility model is as follows:

a coaxial trocar, comprising: including sleeve pipe, pjncture needle, stock solution pipe, the pjncture needle is pegged graft in the sleeve pipe, the inside intercommunication of pjncture needle, the sleeve pipe front end is provided with the side opening, sleeve pipe outer wall both sides are provided with the needle wing, the sleeve pipe lateral wall is connected with hose assembly, the dismantlement of sleeve pipe rear end is connected with the piston, the hose assembly other end is connected with stock solution pipe, the intraductal liquid distribution board that is provided with of stock solution, liquid distribution board is divided into passageway A and the passageway B of symmetry with stock solution pipe along stock solution pipe longitudinal section, passageway A, passageway B upper end communicate respectively has injection side pipe, injection side pipe upper end is connected with the syringe.

Preferably, the hose assembly comprises a first hose, a second hose and a third hose, a three-way pipe is connected among the first hose, the second hose and the third hose, the other end of the first hose is communicated with the channel A, the other end of the second hose is communicated with the channel B, and the other end of the third hose is communicated with the sleeve.

Preferably, the hose III comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the three-way pipe, one end of the second connecting pipe is connected with the sleeve, the outer walls of the other ends of the first connecting pipe and the second connecting pipe are provided with threaded rings, the outer walls of the threaded rings are in threaded connection with threaded pipes, and the outer wall of one end of each threaded pipe is provided with a first clamping cap and a first clamping grid which are matched with each other.

Preferably, the first hose and the second hose are respectively provided with a transfusion valve.

Preferably, the upper end of the liquid storage tube is also provided with a fixing clip.

Preferably, the outer wall of the liquid storage pipe is also provided with scale values along the longitudinal section direction.

Preferably, the piston is provided with a threaded hole along the axial direction, the puncture needle comprises a needle handle, a threaded rod and a needle body from top to bottom, the threaded rod is in threaded connection with the threaded hole, the diameter of the needle body is smaller than that of the threaded rod, and the diameter of the needle handle is larger than that of the threaded rod.

Preferably, the outer wall of the piston is provided with a second clamping cap and a second clamping lattice which are matched.

The utility model has the following beneficial effects:

1. the liquid storage tube provided by the utility model stores a plurality of medicines through the liquid separation plate, each medicine is respectively provided with the infusion valve for adjusting the flow of the medicine, and the scale value of the liquid storage tube is convenient for observing the use condition of the medicine.

2. The puncture needle is in threaded connection with the piston, so that the puncture needle is convenient to fix and take out.

3. The liquid storage tube and the sleeve are detachably connected through the hose III for infusion, the first connecting tube and the second connecting tube of the hose III are connected together when medicine is injected, and the first connecting tube and the second connecting tube can be disconnected when medicine is not injected.

The utility model has simple operation and practical function and is very worthy of popularization.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is an enlarged view of the area A of the present invention.

Fig. 3 is an exploded view of the needle of the present invention.

Fig. 4 is an exploded view of the piston of the present invention.

1. The infusion set comprises a cannula, 101, a side hole, 2, a puncture needle, 201, a needle handle, 202, a threaded rod, 203, a needle body, 3, a liquid storage tube, 301, a channel A, 302, a channel B, 303, a liquid separation plate, 5, a hose assembly, 501, a hose I, 502, a hose II, 503, a hose III, 5031, a connecting pipe I, 5032, a connecting pipe II, 5033, a threaded ring, 5034, a threaded pipe, 5035, a clamping cap I, 5036, a clamping cap I, 504, a three-way pipe, 505, an infusion valve, 7, a needle wing, 8, an injection side pipe, 9, a fixing clamp, 10, a scale value, 11, a piston, 1101, a threaded hole, 1102, a clamping cap II, 1103 and a clamping cap II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A coaxial cannula 1 needle, characterized by: including sleeve pipe 1, pjncture needle 2, stock solution pipe 3, pjncture needle 2 is pegged graft in

sleeve pipe

1, 2 inside intercommunications of pjncture needle, 1 front end of sleeve pipe is provided with

side opening

101, 1 outer wall both sides of sleeve pipe are provided with needle wing 7, 1 lateral wall of sleeve pipe is connected with

hose assembly

5, 1 rear end dismantlement of sleeve pipe is connected with piston 11, the 5 other end of hose assembly is connected with stock solution pipe 3, be provided with branch liquid board 303 in the stock solution pipe 3, divide liquid board 303 to divide into passageway A301 and passageway B302 of symmetry with stock solution pipe 3 along stock solution pipe 3 longitudinal section, passageway A301, passageway B302 upper end communicate respectively has injection side pipe 8, 8 upper ends on the injection side pipe are connected with the syringe. The side hole 101 that the sleeve pipe 1 front end set up can let the scope that the medicine distributes wider, reaches better treatment. The needle wing 7 is used for holding by hand, and the surface of the needle wing 7 can be wrapped with adhesive tape for fixing the sleeve 1. The liquid separating plate 303 is used for separating the inner space of the liquid storage tube 3 and storing different liquid medicines, and the channel a301 and the channel B302 can store different liquid medicines respectively.

The side wall of the sleeve 1 is connected with a hose assembly 5, and the other end of the hose assembly 5 is connected with a liquid storage tube 3. In this embodiment, the hose assembly 5 includes a first hose 501, a second hose 502, and a third hose 503, a three-way pipe 504 is connected between the first hose 501, the second hose 502, and the third hose 503, the other end of the first hose 501 is communicated with the channel a301, the other end of the second hose 502 is communicated with the channel B302, and the other end of the third hose 503 is communicated with the sleeve 1. In this embodiment, the third hose 503 includes a first connecting pipe 5031 and a second connecting pipe 5032, one end of the first connecting pipe 5031 is connected to the three-way pipe 504, one end of the second connecting pipe 5032 is connected to the bushing 1, the outer walls of the other ends of the first connecting pipe 5031 and the second connecting pipe 5032 are provided with a threaded ring 5033, the outer wall of the threaded ring 5033 is in threaded connection with a threaded pipe 5034, and the outer wall of one end of the threaded pipe 5034 is provided with a first locking cap 5035 and a first locking lattice 5036 which are matched with each other. In this embodiment, the first hose 501 and the second hose 502 are respectively provided with an infusion valve 505. The infusion valve 505 on the first hose 501 can control the flow and magnitude of the drug in channel A301, and the infusion valve 505 on the second hose 502 can control the flow and magnitude of the drug in channel B302. When in use: when injecting medicine, firstly, the threaded pipe 5034 is rotated, the first connecting pipe 5031 and the second connecting pipe 5032 are connected together through the threaded ring 5033, the medicine is respectively injected into the channel A301 and the channel B302 through the injection side pipe 8, the infusion valves 505 on the channel A301 and the channel B302 are opened, the medicine in the channel A301 and the channel B302 respectively flows into the three-way pipe 504 through the first hose 501 and the second hose 502, then flows into the third hose 503 through the three-way pipe 504, and finally flows into the cannula 1 through the third hose 503 until entering the human body, so that medicine infusion is realized. After the injection of the medicine is completed or the injection amount reaches the target, the infusion valve 505 can be closed, or the threaded tube 5034 can be rotated again to disconnect the first connecting tube 5031 and the second connecting tube 5032, and the first clamping cap 5035 is covered on the first clamping cap 5036 to block the inlet of the second connecting tube 5032, so as to prevent the dirty things from entering the cannula 1 or the residual liquid of the medicine in the cannula 1 from flowing out.

In this embodiment, the upper end of the liquid storage tube 3 is further provided with a fixing clip 9. The fixing clip 9 is used for fixing the liquid storage tube 3 and preventing the liquid storage tube 3 from being at a high position.

In this embodiment, the outer wall of the liquid storage tube 3 is further provided with a scale value 10 along the longitudinal section direction. The medical staff can observe the medicine residual quantity through the scale value 10 on the liquid storage tube 3.

In this embodiment, the piston 11 is provided with a threaded hole 1101 along the axial direction, the puncture needle 2 includes a needle handle 201, a threaded rod 202, and a needle body 203 from top to bottom, the threaded rod 202 is screwed in the threaded hole 1101, the diameter of the needle body 203 is smaller than that of the threaded rod 202, and the diameter of the needle handle 201 is larger than that of the threaded rod 202. The diameter of the needle 203 is smaller than that of the threaded rod 202, so that the needle 203 can easily enter and exit the cannula 1. Preferably, the outer wall of the piston 11 is provided with a second matching clamping cap 1102 and a second matching clamping grid 1103. When the puncture needle is used, the second clamping cap 1102 is taken down from the second clamping grid 1103, the puncture needle 2 is screwed into the sleeve 1 through the threaded hole 1101 in the piston 11, the puncture needle 2 is fixed through the threads on the threaded rod 202, the puncture needle 2 is prevented from deflecting in the sleeve 1, after the puncture needle 2 carries the sleeve 1 to enter a human body, the needle wing 7 on the sleeve 1 is pressed, the puncture needle 2 is rotated in the opposite direction, the puncture needle 2 is taken out of the sleeve 1, and finally the second clamping grid 1103 is covered with the clamping cap, so that dirt is prevented from entering the sleeve 1 or residual liquid of the medicine in the sleeve 1 flows out. The plunger 11 can also be removed and the biopsy gun passed in from the rear end of the cannula 1.

The specific use method comprises the following steps:

1. insertion puncture needle 2, cannula 1: the second clamping cap 1102 is taken down from the second clamping grid 1103, the puncture needle 2 is screwed into the sleeve 1 through the threaded hole 1101 in the piston 11, the puncture needle 2 is fixed through the threads on the threaded rod 202, the puncture needle 2 is prevented from deflecting in the sleeve 1, after the puncture needle 2 carries the sleeve 1 to enter a human body, the needle wing 7 on the sleeve 1 is pressed, the puncture needle 2 is rotated in the opposite direction, the puncture needle 2 is taken out of the sleeve 1, and finally the second clamping grid 1103 is covered with the clamping cap.

2. When the medicine is injected: firstly, the threaded pipe 5034 is rotated, the first connecting pipe 5031 and the second connecting pipe 5032 are connected together through the threaded ring 5033, the medicine is respectively injected into the channel A301 and the channel B302 through the injection side pipe 8, the transfusion valves 505 on the channel A301 and the channel B302 are opened, the medicine in the channel A301 and the channel B302 respectively flows into the three-way pipe 504 through the first hose 501 and the second hose 502, then flows into the third hose 503 through the three-way pipe 504, and finally flows into the cannula 1 through the third hose 503 until entering the human body, so that medicine transfusion is realized. After the injection of the drug is completed or the injection amount reaches the target, the infusion valve 505 may be closed, or the threaded tube 5034 may be rotated again to disconnect the first connecting tube 5031 and the second connecting tube 5032, and the first clamping cap 5035 may be covered on the first clamping lattice 5036 to block the inlet of the second connecting tube 5032. In conclusion, the utility model achieves the expected effect.

Claims

1. A coaxial trocar, comprising: including sleeve pipe, pjncture needle, stock solution pipe, the pjncture needle is pegged graft in the sleeve pipe, the inside intercommunication of pjncture needle, the sleeve pipe front end is provided with the side opening, sleeve pipe outer wall both sides are provided with the needle wing, the sleeve pipe lateral wall is connected with hose assembly, the dismantlement of sleeve pipe rear end is connected with the piston, the hose assembly other end is connected with stock solution pipe, the intraductal liquid distribution board that is provided with of stock solution, liquid distribution board is divided into passageway A and the passageway B of symmetry with stock solution pipe along stock solution pipe longitudinal section, passageway A, passageway B upper end communicate respectively has injection side pipe, injection side pipe upper end is connected with the syringe.

2. The coaxial trocar according to claim 1, wherein the hose assembly comprises a first hose, a second hose and a third hose, a three-way pipe is connected among the first hose, the second hose and the third hose, the other end of the first hose is communicated with the channel A, the other end of the second hose is communicated with the channel B, and the other end of the third hose is communicated with the sleeve.

3. The coaxial trocar as recited in claim 2, wherein the third hose comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the three-way pipe, one end of the second connecting pipe is connected with the casing pipe, the outer walls of the other ends of the first connecting pipe and the second connecting pipe are provided with a threaded ring, the outer wall of the threaded ring is in threaded connection with a threaded pipe, and the outer wall of one end of the threaded pipe is provided with a first matched clamping cap and a first matched clamping lattice.

4. The coaxial trocar according to claim 2, wherein the first hose and the second hose are respectively provided with an infusion valve.

5. The coaxial trocar according to claim 1, wherein the upper end of the liquid storage tube is further provided with a fixing clip.

6. The coaxial trocar according to claim 1, wherein the outer wall of the liquid storage tube is further provided with scale values along the longitudinal section direction.

7. The coaxial trocar according to claim 1, wherein the piston is provided with a threaded hole along the axial direction, the puncture needle comprises a needle handle, a threaded rod and a needle body from top to bottom, the threaded rod is connected in the threaded hole in a threaded mode, the diameter of the needle body is smaller than that of the threaded rod, and the diameter of the needle handle is larger than that of the threaded rod.

8. The coaxial trocar as recited in claim 7, wherein the outer wall of the piston is provided with a second locking cap and a second locking grid which are matched.