CN111035439A

CN111035439A - Nerve block puncture medicine injection device

Info

Publication number: CN111035439A
Application number: CN201911373094.6A
Authority: CN
Inventors: 郑艇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-21

Abstract

The invention discloses a nerve block puncture medicine injection device, which relates to the technical field of medical instruments, and comprises: the infusion control device is used for controlling the infusion speed, and one end of the infusion control device is provided with a puncture needle which is used for puncturing the skin and subcutaneous tissues and injecting the medicine to the periphery of the nerve or fascia gap; a detachable sleeve sleeved outside the puncture needle for storing the liquid medicine and providing a constant-speed infusion device with constant output speed; an infusion tube which is arranged between the constant-speed infusion device and the infusion control device and conducts the constant-speed infusion device and the infusion control device. So, the device easy operation, single operation that can accomplish injection local anesthetic, and the speed that can control injection local anesthetic at any time, it is loaded down with trivial details to have solved among the prior art operating process of nerve block anesthesia, dose and the rate of difficult control injection medicine.

Description

Nerve block puncture medicine injection device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a nerve block puncture medicine injection device.

Background

Peripheral nerve block is a well established anesthetic technique, which achieves anesthetic effects by injecting a dose of local anesthetic near the peripheral nerve and nerve endings. Also, it is often used as part of multimodal analgesia, often in combination with other analgesic drugs and methods of analgesia to control pain in patients.

Nerve block anesthesia is very widely used in clinical practice, but the puncture device used for nerve block anesthesia still has its shortcomings at present. At the present stage, the operation of nerve block is mostly completed by two persons, one person is responsible for holding the puncture needle to puncture, and when the puncture needle enters a target area, the other person is responsible for pushing local anesthetic to block. However, the double operation has the following disadvantages: 1. the operation process is relatively complicated; 2. the injection process is not completed by the puncture person himself, on one hand, the puncture needle cannot be tightly matched with the injection process, on the other hand, the puncture person himself cannot feel whether high-tension injection exists, and therefore risks such as injection in nerves are increased to a certain extent.

Therefore, how to solve the technical problem that the operation of a single person for nerve block anesthesia is complicated in the prior art becomes an important technical problem to be solved by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a nerve block puncture medicine injection device to solve the technical problems that the operation process of nerve block anesthesia in the prior art is complicated, and the dosage and the speed of injected medicines are not easy to control. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a nerve block puncture medicine injection device, which comprises:

the infusion control device is used for controlling the infusion speed, and one end of the infusion control device is provided with a puncture needle used for puncturing skin or subcutaneous tissues and injecting medicines to the periphery of nerves or fascia gaps;

the sleeve is sleeved outside the puncture needle and is detachable;

a constant speed infusion device for storing the liquid medicine and providing a constant output speed;

and the infusion tube is arranged between the constant-speed infusion device and the infusion control device and conducts the constant-speed infusion device and the infusion control device.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, the infusion control device comprises a connecting part, the connecting part is provided with a first through hole, two ends of the first through hole are respectively communicated with the infusion tube and the puncture needle, the connecting part is provided with a first groove with a groove bottom, the axis of the first groove is mutually perpendicular to and intersected with the axis of the first through hole, the groove bottom of the first groove is provided with a first spring, one end of the first spring is fixedly connected with the first groove, the other end of the first spring is provided with a first cylinder capable of sliding in the first groove, and the first cylinder is provided with a first through hole; the infusion control device further comprises a sealing device for preventing liquid from flowing out of the first through hole and the first groove; when the first cylinder slides to a first position, the first through hole is positioned at the intersection position of the first through hole and the first groove and communicated with the first through hole, one end of the first cylinder is exposed out of the first groove, and the first spring is in a compressed state; when the first cylinder slides to the second position, the first through hole is positioned above the first through hole and is not communicated with the first through hole, and the first spring is in an initial state.

The puncture needle comprises a puncture needle body, a connecting part and a first spring, wherein the puncture needle body is provided with a first through hole, the first through hole is communicated with the puncture needle body through the connecting part, the connecting part is provided with a first groove with a groove bottom, the axis of the first groove is perpendicular to and intersected with the axis of the first through hole, the groove bottom of the first groove is provided with a first spring, one end of the first spring is fixedly connected with the first groove, the other end of the first spring is provided with a first column body capable of sliding in the first groove, and the first through hole is formed in the first column body; when the second column body slides to a first position, the second through hole is positioned at the intersection position of the second through hole and the second groove and communicated with the second through hole, one end of the second column body is exposed out of the second groove, and the second spring is in a compressed state; when the second cylinder slides to a second position, the second through hole is positioned above the second through hole and is not communicated with the second through hole, and the second spring is in an initial state.

Further, sealing device is including setting up a plurality of sealing washer on the lateral wall of first recess and setting are in first recess open position, be used for placing the shield that dust got into.

Further, the constant-speed infusion device comprises a hard protective shell, an elastic liquid storage bag and an injection pipe, wherein the elastic liquid storage bag is arranged in the hard protective shell and communicated with the infusion pipe, the injection pipe is connected with the elastic liquid storage bag, and the liquid outlet rate of the outlet of the elastic liquid storage bag is constant.

Furthermore, one end of the medicine injection tube, which is far away from the elastic liquid storage bag, is provided with a one-way valve for preventing the liquid medicine from flowing out.

Furthermore, one end of the sleeve far away from the infusion control device is provided with a plurality of holes for the liquid medicine to flow out.

Furthermore, four holes are uniformly distributed on the circumferential side wall of the sleeve along the circumferential direction of the sleeve.

Further, the infusion tube is made of a TPE (Thermoplastic Elastomer).

Furthermore, scale marks for observing the puncture depth are arranged on the peripheral side wall of the puncture needle and extend along the axial direction of the puncture needle.

The nerve block puncture injection device in the technical scheme provided by the invention comprises: the infusion control device is used for controlling the infusion speed, the sleeve is detachably connected with the infusion control device or the puncture needle, an infusion tube is arranged between the constant-speed infusion device and the infusion control device and is communicated with the constant-speed infusion device, and the constant-speed infusion device is used for storing liquid medicine and providing constant output speed; one end of the infusion control device is provided with a puncture needle for puncturing the skin and injecting local anesthetic, and one end of the puncture needle for puncturing the skin is provided with a sharp corner; the interior of the sleeve is hollow, and the puncture needle is arranged in the sleeve and one end with a sharp corner is exposed outside. So, the device easy operation only needs the one hand to hold infusion controlling means, can realize fixed and the control of puncture needle and inject dosage and the speed of local anesthesia liquid medicine to realize that single can accomplish the operation of injecting local anesthesia, solved the operating process of the anesthesia of nerve block among the prior art loaded down with trivial details, the difficult technical problem of dosage and the speed of control injection medicine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a nerve block puncture drug injection device in an embodiment of the present invention;

FIG. 2 is a schematic diagram of an infusion control device in an embodiment of the invention;

FIG. 3 is a schematic top view of an infusion control device in an embodiment of the invention;

FIG. 4 is a schematic view of a planar configuration of an infusion control device in an embodiment of the present invention in a normal state;

FIG. 5 is a front view of a planer cartridge cassette with an infusion control device in an embodiment of the disclosures made herein in compression;

FIG. 6 is a schematic view showing a structure of connection of the puncture needle and the cannula in the embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of a nerve block puncture drug injection device in other embodiments of the present invention;

FIG. 8 is a partial cross-sectional view of the infusion control device of FIG. 7;

fig. 9 is another cross-sectional view of the infusion control device of fig. 7.

In the figure: 1. puncturing needle; 2. a sleeve; 3. an infusion control device; 31. a first column; 311. a through hole; 32. a connecting portion; 321. a first through hole; 322. a first groove; 323. a second through hole; 324. a second groove; 33. a dust cover; 34. a seal ring; 35. a first spring; 36. a second spring; 37. a second cylinder; 371. a second through hole; 4. a transfusion tube; 5. a constant-speed infusion device; 51. a medicine injection tube; 52. an elastic liquid storage bag; 53. a hard protective shell; 6. a negative pressure drainage bag; 7. a conduit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

An object of this embodiment is to provide a nerve block puncture injection device, through control infusion controlling means, realizes the control to the dose and the speed of injection liquid medicine, and single can accomplish the operation, has solved the operating process of the nerve block anesthesia among the prior art loaded down with trivial details, the technical problem of the dose and the speed of difficult control injection medicine.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1-9, the present embodiment provides a nerve block puncture drug injection device, which includes: a infusion control device 3 for controlling infusion speed and dose, infusion control device 3's first end is equipped with pjncture needle 1, and pjncture needle 1 can puncture skin or subcutaneous tissue and inject the medicine to nerve around or the manadesma clearance, and pjncture needle 1's first end is connected with infusion control device 3, and this connection can be fixed connection, also can be detachable connects, can set up according to specific user demand, and pjncture needle 1's material is the stainless steel, so makes things convenient for puncture skin. The cover is in puncture needle 1 outer and detachable sleeve pipe 2, the inside cavity of sleeve pipe 2, puncture needle 1 sets up inside sleeve pipe 2, after puncture needle 1 passed sleeve pipe 2, its first end is also the one end that has the sharp angle exposes outside, so, 1 appointed position of puncture needle arrival can be followed to sleeve pipe 2, after having injected the local anesthetic, puncture needle 1 can withdraw from alone, and appointed position is stayed to sleeve pipe 2, the analgesia pump is connected to the other end of sleeve pipe 2, thereby the realization is to lasting analgesia at puncture position. The second end of the transfusion control device 3 is communicated with the constant-speed transfusion device 5 through a transfusion tube 4, the constant-speed transfusion device 5 is used for storing liquid medicine and providing constant transfusion speed, the constant-speed transfusion device specifically comprises a hard protective shell 53 used for protecting the constant-speed transfusion device 5, an elastic liquid storage bag 52 arranged inside the hard protective shell 53 and a medicine injection tube 51 connected with the elastic liquid storage bag 52, the elastic liquid storage bag 52 is communicated with the transfusion tube 4, the elastic liquid storage bag 52 is made of silicon rubber, the main chain of the silicon rubber is formed by silicon and oxygen atoms in an alternating mode, the silicon atoms are usually connected with rubber with two organic groups, due to the characteristic of the material, the inner wall of the elastic liquid storage bag 52 can be contracted with constant contraction force no matter how much the elastic liquid storage bag 52 is expanded, constant-speed liquid discharge is realized, the hard protective shell 53 is made of hard plastic and is in an oval shape, one end of, the other end of the infusion tube is connected with the outer wall of the infusion tube 4, one end of the drug injection tube 51 far away from the elastic liquid storage bag 52 is provided with a one-way valve for preventing the backflow of the drug liquid, and the drug injection tube 51, the elastic liquid storage bag 52, the infusion tube 4 and the infusion control device 3 are of an integrated structure; it should be noted that the constant-speed infusion device 5 is of this structure in this embodiment, and may be of other structures in other embodiments, or may be a device, such as a constant-speed liquid outlet pump, etc., as long as it can ensure that the liquid outlet rate at one end of the infusion tube 4 is constant.

Therefore, the device is simple to operate, and when the device is used, the puncture needle 1 can be fixed and the dosage and the speed of the local anesthetic injection liquid can be controlled and changed at any time only by holding the infusion control device 3 with one hand, so that the local anesthetic injection operation can be completed by one person. The device has the following advantages: 1. the whole process can be completed by a single person when the nerve blocking operation is carried out, so that the operation steps of nerve blocking are simplified, and the technical process is optimized; 2. the medicine injection process is completely controlled by an operator, so that the risks related to nerve block such as nerve injury are reduced; 3. after the medicine is injected, the puncture needle core is pulled out, the indwelling cannula can be directly connected with the analgesia pump connector, and in the traditional method, the cannula is independently arranged and needs to be placed into a target area along the puncture needle core through skin, so that the operation is usually carried out by continuously positioning the cannula with an ultrasonic probe, and the puncture needle is often displaced to cause that the cannula cannot be well placed around nerves (or in an aponeurosis gap) so as to cause postoperative analgesia failure.

In some embodiments, a side hole may be provided on the cannula 2, so as to facilitate the injection of the medical solution into the target area in different directions.

Specifically, the infusion control device 3 includes a connection portion 32, which is an elongated shape as a whole, and has a polygonal cross section, and can be set to different shapes as required, the connection portion 32 has a first through hole 321 for the liquid medicine to flow through, the diameter of the first through hole 321 can be set as required, one end of the first through hole 321 is connected to the puncture needle 1, the other end is connected to the infusion tube 4, the connection portion 32 is provided with a first groove 322 having a groove bottom, the axis of the first groove 322 is perpendicular to and intersects with the axis of the first through hole 321, the groove bottom of the first groove 322 is further provided with a first spring 35, one end of the first spring 35 is fixedly connected to the groove bottom, the other end is provided with a first column 31, the first column 31 can slide in the first groove 322, the first column 31 is further provided with a first through hole 311 for the liquid medicine to flow through, the size and shape of the first through hole 311 can be the same as or different from the size and shape of, the cross sections of the two are circular and have the same size in the implementation; when the first end of the first cylinder 31 is pressed to slide to the first position, the first through hole 311 is located at the intersection position of the first groove 322 and the first through hole 321 and is communicated with the first through hole 321, at this time, the first spring 35 is in a compressed state, a part of the first end of the first cylinder 31 is still located outside the first groove 322, it is ensured that the first through hole 311 is completely communicated with the first through hole 321, when the first cylinder 31 is released, the first cylinder 31 is pushed to the second position due to the deformation force generated by the first spring 35, at this time, the first through hole 311 is located above the first through hole 321 and is not communicated with the first through hole 321, the first spring 35 restores to the initial state, because the first spring 35 is connected to the first cylinder 31, the first cylinder 31 cannot slide out of the first groove 322, the cross section of the first cylinder 31 is the same as the cross section of the first groove 322, and is a polygon, here is a quadrangle, therefore, the first cylinder 31 is limited from rotating in the first groove 322, and the first through hole 311 and the first through hole 321 are aligned and communicated.

In some embodiments, the negative pressure drainage bag 6 is further included, the connecting portion 32 has a second through hole 323, the diameter of the second through hole 323 can be set according to specific requirements, one end of the second through hole 323 is connected with the puncture needle 1, the other end of the second through hole 323 can be connected with the negative pressure drainage bag 6 through the catheter 7, the connecting portion 32 is provided with a second groove 324 having a groove bottom, the axis of the second groove 324 is perpendicular to and intersects with the axis of the second through hole 323, the groove bottom of the second groove 324 is further provided with a second spring 36, one end of the second spring 36 is fixedly connected with the groove bottom, the other end of the second spring is provided with a second column 37, the second column 37 can slide in the second groove 324, the second column 37 is further provided with a second through hole 371, the size and the shape of the second through hole 371 can be the same as or different from the size and the shape of the second through hole 323, and the, and the sizes are the same; when the first end of the second column 37 is pressed to slide to the first position, the second through hole 371 is located at the intersection position of the second groove 324 and the second through hole 323 and is communicated with the second through hole 323, at this time, the second spring 36 is in a compressed state, the first end of the second column 37 is still partially located outside the second groove 324, the second through hole 371 is ensured to be completely communicated with the second through hole 323, when the second column 37 is released, the second column 37 is pushed to the second position due to the deformation force generated by the second spring 36, at this time, the second through hole 371 is located above the second through hole 323 and is not communicated with the second through hole 323, the second spring 36 restores to the initial state, because the second spring 36 is connected with the second column 37, the second column 37 cannot slide out of the second groove 324, the cross section of the second column 37 is the same as the cross section of the second groove 324, and is a polygon, here is a quadrangle, therefore, the second post 37 is limited from rotating in the second groove 324, and the second through hole 371 and the second through hole 323 can be aligned and communicated. So insert human back at pjncture needle 1, can press second cylinder 37 and make pjncture needle 1 and negative pressure drainage bag 6 switch on, the body fluid in the human body receives the pressure effect can follow pjncture needle 1 outward flow, infusion control device 3 can set up to transparent material, when body fluid flows to infusion control device 3, can observe whether there is the blood to flow from the outside, when guaranteeing not having the blood to flow out, explain in pjncture needle 1 does not insert the blood vessel, the expression can be to human injection liquid medicine, loosen second cylinder 37 this moment, pjncture needle 1 and negative pressure drainage bag 6 no longer switch on, can press first cylinder 31 and carry out the liquid medicine injection.

Furthermore, the infusion control device 3 is further provided with a sealing device for preventing liquid from flowing out of the first through hole 321 or the first groove 322, the sealing device comprises a plurality of sealing rings 34 arranged on the inner side wall of the first groove 322 and a dust cover 33 arranged at the opening position of the first groove 322, and dust is prevented from entering the sealing device. The sealing rings 34 prevent liquid from flowing out, and the dust cover 33 prevents dust from entering, so that the device is more sanitary and safer. Similarly, a plurality of sealing rings can be disposed on the inner side wall of the second groove 324, and a dust cover 33 is disposed at the opening position of the second groove 324.

Preferably, the cannula 2 is provided with a plurality of holes for the analgesic liquid to flow out, in this embodiment, four holes are provided, and are evenly distributed along the circumferential direction of the cannula 2, on the side wall of the end far from the infusion control device 3, that is, the side wall of the end near the puncture needle 1 where the sharp corner is provided. Thus, a plurality of holes are arranged, which is convenient for analgesic liquid medicine to flow out quickly.

As an alternative embodiment, the puncture needle 1 has a diameter of 0.2mm to 1.5mm and a length of 20mm to 150mm, so that the puncture needle 1 under the data can meet most of the use requirements.

Further preferred embodiment, the material of transfer line 4 is the TPE material, and this material has high strength, but the characteristics of injection molding processing, and the range of application is extensive, and the environmental protection is nontoxic safe, and the sense of touch is soft, and weatherability, fatigue resistance and temperature resistance all are good and need not to vulcanize, practice thrift the cost.

In a specific implementation mode, the circumferential side wall of the puncture needle 1 is provided with scale marks for observing the puncture depth, and the scale marks extend along the axial direction of the puncture needle 1, so that the scale marks are arranged, the puncture depth can be conveniently observed by medical staff, and the anesthesia effect is prevented from being influenced by too deep puncture or too shallow puncture.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A nerve block puncture injection device, comprising:

the infusion control device (3) is used for controlling the infusion speed, and one end of the infusion control device (3) is provided with a puncture needle (1) which is used for puncturing skin or subcutaneous tissue and injecting medicine to the periphery of nerves or fascial gaps;

a detachable sleeve (2) sleeved outside the puncture needle (1);

a constant speed infusion device (5) for storing the liquid medicine and providing a constant output speed;

and an infusion tube (4) which is arranged between the constant-speed infusion device (5) and the infusion control device (3) and conducts the constant-speed infusion device and the infusion control device.

2. The nerve block puncture drug injection device according to claim 1, wherein the infusion control device (3) includes a connection portion (32), the connecting part (32) is provided with a first through hole (321), two ends of the first through hole (321) are respectively communicated with the transfusion tube (4) and the puncture needle (1), a first groove (322) with a groove bottom is arranged on the connecting part (32), the axis of the first groove (322) is mutually vertical and intersected with the axis of the first through hole (321), a first spring (35) is arranged at the bottom of the first groove (322), one end of the first spring (35) is fixedly connected with the first groove (322), a first column body (31) capable of sliding in the first groove (322) is arranged at the other end of the first spring, and a first through hole (311) is formed in the first column body (31); the infusion control device (3) further comprises a sealing device for preventing liquid from flowing out of the first through hole (321) and the first groove (322); when the first cylinder (31) slides to a first position, the first through hole (311) is located at the intersection position of the first through hole (321) and the first groove (322) and communicated with the first through hole (321), one end of the first cylinder (31) is exposed out of the first groove (322), and the first spring (35) is in a compressed state; when the first cylinder (31) slides to the second position, the first through hole (311) is positioned above the first through hole (321) and is not communicated with the first through hole (321), and the first spring (35) is in an initial state.

3. The nerve block puncture drug injection device according to claim 2, further comprising a negative pressure drainage bag (6), wherein the connecting portion (32) is provided with a second through hole (323), two ends of the second through hole (323) are respectively communicated with the negative pressure drainage bag (6) and the puncture needle (1), a second groove (324) with a groove bottom is arranged on the connecting portion (32), the axis of the second groove (324) is perpendicular to and intersects with the axis of the second through hole (323), a second spring (36) is arranged at the groove bottom of the second groove (324), one end of the second spring (36) is fixedly connected with the second groove (324), the other end of the second spring is provided with a second column body (37) capable of sliding in the second groove (324), and a second through hole (371) is arranged on the second column body (37); when the second cylinder (37) slides to a first position, the second through hole (371) is positioned at the intersection position of the second through hole (323) and the second groove (324) and communicated with the second through hole (323), one end of the second cylinder (37) is exposed out of the second groove (324), and the second spring (36) is in a compressed state; when the second cylinder (37) slides to a second position, the second through hole (371) is positioned above the second through hole (323) and is not communicated with the second through hole (323), and the second spring (36) is in an initial state.

4. The nerve block puncture drug injection device according to claim 2, wherein the sealing means comprises a plurality of sealing rings (34) provided on the side wall of the first groove (322) and a dust cap (33) provided at the opening position of the first groove (322) for placing dust.

5. The nerve block puncture drug injection device according to claim 1, characterized in that the constant-speed infusion device (5) comprises a hard protective shell (53), an elastic liquid storage bag (52) arranged inside the hard protective shell (53) and communicated with the infusion tube (4), and a drug injection tube (51) connected with the elastic liquid storage bag (52), wherein the liquid outflow rate at the outlet of the elastic liquid storage bag (52) is constant.

6. The nerve block puncture drug injection device according to claim 5, wherein the drug injection tube (51) is provided with a one-way valve for preventing the outflow of the drug solution at an end away from the elastic reservoir bag (52).

7. The nerve block puncture drug injection device according to claim 1, wherein the cannula (2) is provided with a plurality of holes for the outflow of the drug solution at an end remote from the infusion control device (3).

8. The nerve block puncture drug injection device according to claim 7, characterized in that the holes are evenly distributed four times on the circumferential side wall of the cannula (2) along the circumferential direction of the cannula (2).

9. The nerve block puncture drug injection device according to claim 1, wherein the infusion tube (4) is made of TPE material.

10. The nerve block puncture drug injection device according to claim 1, wherein a graduation line for observing the puncture depth is provided on the circumferential side wall of the puncture needle (1), the graduation line extending in the axial direction of the puncture needle (1).