CN211325458U - Nerve block puncture medicine injection device - Google Patents

Abstract

The utility model discloses a nerve block puncture injection device relates to medical instrument technical field, and the device includes: 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 injection device

technical field

The utility model relates to the technical field of medical devices, in particular to a nerve block puncture and drug injection device.

Background technique

Nowadays, peripheral nerve block is a relatively mature anesthesia technique, which achieves anesthesia effect by injecting a certain dose of local anesthetic near peripheral nerves and nerve endings. At the same time, it is often used as part of multimodal analgesia, often in combination with other analgesic drugs and analgesic methods to control pain in patients.

Nerve block anesthesia is widely used clinically, but the current puncture devices for nerve block anesthesia still have its shortcomings. At this stage, most of the nerve block operations are done by two people, one person is responsible for holding the puncture needle for puncture, and the other person is responsible for bolus injection of local anesthetic for block after the puncture needle enters the target area. However, the two-person operation has the following shortcomings: 1. The operation process is relatively cumbersome; 2. The drug injection process is not completed by the puncture himself. There are high tension injections, which to some extent increase the risks of intraneural injections, etc.

Therefore, how to solve the complicated technical problem of single-person operation of nerve block anesthesia in the prior art has become an important technical problem to be solved by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a nerve block puncture and injection device to solve the technical problems of the prior art that the operation process of nerve block anesthesia is cumbersome, and it is difficult to control the dose and rate of injection drugs. The technical effects that can be produced by the preferred technical solutions among the technical solutions provided by the present invention are detailed in the following descriptions.

To achieve the above object, the utility model provides the following technical solutions:

The nerve block puncture and injection device provided by the utility model includes:

An infusion control device for controlling the infusion rate, one end of the infusion control device is provided with a puncture needle for puncturing the skin or subcutaneous tissue and injecting the drug into the periphery of the nerve or the fascial space;

a detachable cannula sheathed outside the puncture needle;

Constant-rate infusion device used to store liquid medicine and provide constant output speed;

An infusion tube that is arranged between the constant-rate infusion device and the infusion control device and conducts the two.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, the infusion control device includes a connecting part, the connecting part has a first through hole, and both ends of the first through hole are respectively connected with the infusion tube and the puncture needle, and the connecting part is on the connecting part. There is a first groove with a groove bottom, the axis of the first groove and the axis of the first through hole are perpendicular to and intersect with each other, the groove bottom of the first groove is provided with a first spring, the One end of the first spring is fixedly connected with the first groove, and the other end is provided with a first cylinder that can slide in the first groove, and the first cylinder is provided with a first through hole; The infusion control device further includes 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 located in the first through hole. The first through hole intersects with the first groove and communicates with the first through hole, one end of the first cylinder is exposed outside 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 located above the first through hole and is not communicated with the first through hole, and the first spring is in an initial state.

Further, it also includes a negative pressure drainage bag, the connecting part is provided with a second through hole, the two ends of the second through hole are respectively connected with the negative pressure drainage bag and the puncture needle, the connecting part is There is a second groove with a groove bottom, the axis of the second groove and the axis of the second through hole are perpendicular to and intersect with each other, and the groove bottom of the second groove is provided with a second spring, so One end of the second spring is fixedly connected with the second groove, the other end is provided with a second cylinder that can slide in the second groove, and the second cylinder is provided with a second through hole; When the second cylinder slides to the first position, the second through hole is located at the intersection of the second through hole and the second groove and communicates with the second through hole. One end of the cylinder is exposed outside the second groove, and the second spring is in a compressed state; when the second cylinder slides to the second position, the second through hole is located in the second through hole Above and not communicating with the second through hole, the second spring is in an initial state.

Further, the sealing device includes a plurality of sealing rings arranged on the side wall of the first groove and a dust cover arranged at the opening position of the first groove for allowing dust to enter.

Further, the constant-speed infusion device includes a hard protective shell, an elastic liquid storage bag arranged inside the hard protective shell and communicated with the infusion tube, and a drug injection tube connected with the elastic liquid storage bag, The liquid flow rate at the outlet of the elastic reservoir is constant.

Further, a one-way valve for preventing the outflow of the medicinal liquid is provided at the end of the medicinal injection tube away from the elastic liquid storage bag.

Further, the sleeve is provided with a plurality of holes for the outflow of medicinal liquid at one end away from the infusion control device.

Further, four holes are evenly distributed along the circumferential direction of the sleeve on the peripheral side wall of the sleeve.

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

Further, a scale line for observing the penetration depth is provided on the peripheral side wall of the puncture needle, and the scale line extends along the axial direction of the puncture needle.

The nerve block puncture and medicine injection device in the technical solution provided by the present utility model includes: an infusion control device for controlling the infusion speed, a cannula detachably connected to the infusion control device or the puncture needle, and arranged in the constant speed infusion device The infusion tube connecting with the infusion control device and the constant-speed infusion device for storing the liquid medicine and providing a constant output speed; one end of the infusion control device is provided with a device for puncturing the skin and injecting local anesthetics A puncture needle, one end of the puncture needle used for puncturing the skin is provided with a sharp corner; the inside of the cannula is hollow, the puncture needle is arranged in the cannula, and the end with the sharp corner is exposed. In this way, the device is simple to operate, and only needs to hold the infusion control device with one hand to fix the puncture needle and control the dose and rate of injection of local anesthetic liquid, so that the operation of injecting local anesthetic can be completed by a single person. It solves the technical problems that the operation process of nerve block anesthesia in the prior art is cumbersome and it is difficult to control the dose and rate of the injected medicine.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the structural representation of the nerve block puncture injection device in the embodiment of the present invention;

2 is a schematic structural diagram of an infusion control device in an embodiment of the present invention;

Fig. 3 is the top-view structure schematic diagram of the infusion control device in the embodiment of the present invention;

4 is a schematic view of the planed surface structure of the infusion control device in the embodiment of the present invention when it is in a normal state;

5 is a front view of the planed filter box when the infusion control device in the embodiment of the present invention is compressed;

6 is a schematic diagram of the connection structure of the puncture needle and the cannula in the embodiment of the present invention;

7 is a schematic structural diagram of a nerve block puncture injection device in other embodiments of the present invention;

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

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

In the figure: 1, puncture needle; 2, cannula; 3, infusion control device; 31, first cylinder; 311, through hole; 32, connecting part; 321, first through hole; 322, first groove; 323, the second through hole; 324, the second groove; 33, the dust cover; 34, the sealing ring; 35, the first spring; 36, the second spring; 37, the second cylinder; 371, the second through hole 4. Infusion tube; 5. Constant-speed infusion device; 51. Drug injection tube; 52. Elastic liquid storage bag; 53. Hard protective shell; 6. Negative pressure drainage bag; 7. Catheter.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

The purpose of this specific embodiment is to provide a nerve block puncture and drug injection device, which can control the dose and rate of the injected drug solution by controlling the infusion control device, and the operation can be completed by a single person, which solves the problem of the prior art. The operation process of nerve block anesthesia is cumbersome, and it is not easy to control the technical problems of the dose and rate of injected drugs.

Hereinafter, the embodiment will be described with reference to the drawings. In addition, the embodiments shown below do not have any limiting effect on the content of the utility model described in the claims. In addition, the whole content of the structure shown in the following embodiment is not limited to what is necessary for the solution of the invention described in the claim.

Please refer to FIGS. 1-9. The nerve block puncture and injection device provided in this embodiment includes: an infusion control device 3 for controlling the infusion speed and dose. The first end of the infusion control device 3 is provided with a puncture needle 1. The needle 1 can puncture the skin or subcutaneous tissue and inject the drug into the surrounding nerve or the fascia space. The first end of the puncture needle 1 is connected to the infusion control device 3, and the connection can be a fixed connection or a detachable connection. According to specific usage requirements, the material of the puncture needle 1 is stainless steel, which is convenient for puncturing the skin. A detachable cannula 2 that is sleeved outside the puncture needle 1, the cannula 2 is hollow inside, and the puncture needle 1 is arranged inside the cannula 2. After the puncture needle 1 passes through the cannula 2, the first end of the cannula 2 has a pointed tip. One end of the corner is exposed, so that the cannula 2 can follow the puncture needle 1 to the designated site. After the injection of the local anesthetic, the puncture needle 1 can be withdrawn alone, while the cannula 2 remains at the designated place, and the other end of the cannula 2 is connected Analgesic pump to achieve continuous analgesia at the puncture site. The second end of the infusion control device 3 is communicated with the constant-speed infusion device 5 through the infusion tube 4, and the constant-speed infusion device 5 is used to store the medicinal liquid and provide a constant infusion rate, which specifically includes the protection of the constant-speed infusion device 5. The hard protective shell 53, the elastic liquid storage bag 52 arranged inside the hard protective shell 53, and the drug injection tube 51 connected with the elastic liquid storage bag 52, the elastic liquid storage bag 52 is connected with the infusion tube 4, and the elastic liquid storage bag 52 is connected with the infusion tube 4. The liquid storage bag 52 is made of silicone rubber. Silicone rubber refers to the rubber whose main chain is alternately composed of silicon and oxygen atoms, and the silicon atom is usually connected with two organic groups. Due to the characteristics of this material, no matter the elastic liquid storage bag To what extent the 52 expands, its inner wall will shrink with a constant shrinking force, so as to achieve a constant rate of liquid discharge. The hard protective shell 53 is made of hard plastic, and the overall shape is oval. One end has an opening that is the same as the atmosphere. The other end is connected with the outer wall of the infusion tube 4. The drug injection tube 51 is provided with a one-way valve at one end away from the elastic liquid storage bag 52 for preventing the backflow of the liquid medicine. The tube 4 and the infusion control device 3 have an integrated structure; it should be noted that, in this embodiment, the constant-speed infusion device 5 has this structure, and in other embodiments, it can also be other structures, or it can be a device , such as a constant-speed outflow pump, etc., as long as the outflow rate at one end of the infusion tube 4 can be guaranteed to be constant.

In this way, the device is easy to operate. When in use, it is only necessary to hold the infusion control device 3 with one hand to fix the puncture needle 1 and to control and change the dose and rate of the injected local anesthetic liquid at any time, so that a single person can Complete the injection of local anesthetic. The device has the following advantages: 1. The whole process of nerve block operation can be completed by a single person, which simplifies the operation steps of nerve block and optimizes the technical process; 2. The drug injection process is completely controlled by the operator himself, which reduces the nerve block. Related risks such as nerve damage; 3. Pull out the puncture needle core after injection, and the indwelling cannula can be directly connected to the analgesic pump connector, while the cannula is set independently in the traditional method, and needs to pass through the skin along the puncture needle core When placing the target area, the ultrasound probe often needs to be continuously positioned during this operation, and often leads to the displacement of the puncture needle, and the cannula cannot be placed well around the nerve (or in the fascial space), resulting in the failure of postoperative analgesia.

In some embodiments, side holes may be provided on the cannula 2, so as to facilitate the injection of the medicinal liquid into the target area in different directions.

Specifically, the infusion control device 3 includes a connecting portion 32, which is in the shape of a long strip as a whole and a polygonal cross-section. Of course, it can also be set into different shapes as required. The connecting portion 32 has a first through hole 321 for the medicinal liquid to flow through. The diameter of the first through hole 321 can be set according to specific needs. One end of the first through hole 321 is connected with the puncture needle 1, and the other end is connected with the infusion tube 4. The connecting portion 32 is provided with a first groove bottom. In the groove 322, the axis of the first groove 322 and the axis of the first through hole 321 are perpendicular to and intersect with each other. A first spring 35 is also provided at the bottom of the first groove 322, and one end of the first spring 35 is connected to the bottom of the groove. Fixed connection, the other end is provided with a first cylinder 31, the first cylinder 31 can slide in the first groove 322, the first cylinder 31 is also provided with a first through hole 311 for the liquid to flow through, The size and shape of the first through-hole 311 and the size and shape of the first through-hole 321 can be the same or different, and they can be set as required. 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 of the first groove 322 and the first through hole 321, and communicates with the first through hole 321. When the first spring 35 is in a compressed state, a part of the first end of the first cylinder 31 is left outside the first groove 322 to ensure that the first through hole 311 and the first through hole 321 are completely connected. For the first cylinder 31 , 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 connected to the first through hole 321 No communication, the first spring 35 returns to the initial state, because the first spring 35 is connected to the first cylinder 31, so the first cylinder 31 will not slide out of the first groove 322, and the cross section of the first cylinder 31 is the same as that of the first cylinder 31. The cross-sectional shape of the first groove 322 is the same, both of which are polygonal, and here it is a quadrilateral. In this way, the rotation of the first cylinder 31 in the first groove 322 can be restricted, and the first through hole 311 and the first through hole 321 can be ensured. Aligned on.

In some embodiments, the negative pressure drainage bag 6 is also 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 needs, and one end of the second through hole 323 is connected to the puncture needle 1 . , the other end can be connected to the negative pressure drainage bag 6 through the conduit 7, the connecting part 32 is provided with a second groove 324 with a groove bottom, the axis of the second groove 324 and the axis of the second through hole 323 are perpendicular to each other and Intersecting, a second spring 36 is also provided at the bottom of the second groove 324, one end of the second spring 36 is fixedly connected to the bottom of the groove, and the other end of the second spring 36 is provided with a second cylinder 37. The two grooves 324 slide in, and the second cylinder 37 is also provided with a second through hole 371. The size and shape of the second through hole 371 and the size and shape of the second through hole 323 can be the same or different, depending on the needs. In this embodiment, the cross-sections of both are circular and have the same size; when the first end of the second cylinder 37 is pressed to slide to the first position, the second through hole 371 is located in the second concave The groove 324 intersects with the second through hole 323 and is connected to the second through hole 323. At this time, the second spring 36 is in a compressed state, and the first end of the second cylinder 37 is still partially located in the second groove. In addition to 324, ensure that the second through hole 371 and the second through hole 323 are completely connected. When the second cylinder 37 is released, the second cylinder 37 will be 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 in communication with the second through hole 323, and the second spring 36 returns to the initial state, because the second spring 36 is connected to the second cylinder 37, so the first The two cylinders 37 will not slide out of the second groove 324. The cross-section of the second cylinder 37 is the same as that of the second groove 324, both of which are polygonal, and here it is a quadrilateral, so that the second cylinder can be restricted. The body 37 rotates in the second groove 324 to ensure that the second through hole 371 and the second through hole 323 can be aligned and conducted. In this way, after the puncture needle 1 is inserted into the human body, the second cylinder 37 can be pressed to make the puncture needle 1 and the negative pressure drainage bag 6 conduct, and the body fluid in the human body will flow outward along the puncture needle 1 under the action of pressure, and the infusion control device 3 can be set. It is a transparent material. When the body fluid flows to the infusion control device 3, it can be observed from the outside whether there is blood flowing out. When it is ensured that there is no blood flowing out, it means that the puncture needle 1 is not inserted into the blood vessel, which means that the medicine can be injected into the human body. When the second cylinder 37 is released, the puncture needle 1 and the negative pressure drainage bag 6 are no longer connected, and the first cylinder 31 can be pressed for liquid injection.

Further, the infusion control device 3 is also provided with a sealing device for preventing the liquid from flowing out of the first through hole 321 or the first groove 322, and the sealing device includes a plurality of sealing rings 34 arranged on the inner wall of the first groove 322, And a dust cover 33 arranged at the opening position of the first groove 322 to prevent dust from entering. In this embodiment, three sealing rings 34 are provided, which are respectively arranged above the intersection of the first groove 322 and the first through hole 321. and below and where the first groove 322 opens. Multiple sealing rings 34 prevent liquid from flowing out, and dust cover 33 prevents dust from entering, which is more hygienic and safer. Similarly, a plurality of sealing rings may also be provided on the inner side wall of the second groove 324 , and a dust cover 33 may be provided at the opening position of the second groove 324 .

Preferably, the cannula 2 is provided with a plurality of holes for the outflow of the analgesic liquid on the side wall of one end away from the infusion control device 3, that is, the side wall of the end close to the puncture needle 1 with the sharp angle. , there are four holes, and they are evenly distributed along the circumferential direction of the sleeve 2 . In this way, a plurality of holes are provided to facilitate the rapid outflow of the analgesic liquid.

As an optional embodiment, the diameter of the puncture needle 1 is 0.2mm-1.5mm, and the length is 20mm-150mm. In this way, the puncture needle 1 under this data can meet most of the usage requirements.

In a further preferred embodiment, the material of the infusion tube 4 is TPE material, which has the characteristics of high strength, can be injection molded, has a wide range of applications, is environmentally friendly, non-toxic and safe, and has soft touch, weather resistance, fatigue resistance and temperature resistance. They are all good and do not require vulcanization, saving costs.

Specific embodiment, the peripheral side wall of the puncture needle 1 is provided with a scale line for observing the penetration depth, and the scale line extends along the axial direction of the puncture needle 1. In this way, the scale line is provided, which is convenient for medical personnel to observe the penetration depth. , so as not to penetrate too deep or too shallow, thus affecting the effect of anesthesia.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

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).

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