Intervertebral disc puncture radiography needle suite capable of performing needle passage local infiltration anesthesia

Abstract

An intervertebral disc puncture radiography needle suite capable of conducting needle passage local infiltration anesthesia comprises a guide wire, a sharp-head inner core, a flat-head puncture needle and an outer sleeve, a containing cavity is formed in the outer sleeve, the upper end and the lower end of the outer sleeve are provided with penetrating holes only allowing the guide wire to penetrate through, penetrating medicine outlet holes are formed in the sleeve wall of the outer sleeve, and a connecting opening used for being connected with an injector is formed in the side portion of the outer sleeve. The connecting port is communicated with the containing cavity and forms an injection channel with the medicine outlet hole. The guide wire is arranged in the penetrating hole in a penetrating mode and can seal the two ends of the outer sleeve, anesthetic is injected through the connecting port through an injector, the anesthetic can flow out of the anesthetic outlet, infiltration anesthesia of the middle of the puncture needle passage is achieved, and therefore the problem that in the prior art, effective anesthesia cannot be conducted on the middle area of the puncture needle passage is solved. Therefore, severe pain of a patient in an operation is relieved, the patient can better cooperate with the operation, the operation risk is greatly reduced, and the operation time is shortened.

Description

Technical Field

[0001] The utility model relates to a surgical puncture device, in particular to an intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia on the needle tract. Background Art

[0002] The use of a puncture needle for local infiltration anesthesia and puncture positioning is an important preliminary step in performing perforaminal endoscopic lumbar discectomy or disc puncture angiography under local anesthesia. In particular, in perforaminal endoscopic lumbar discectomy, the first step is to place the hollow puncture needle with an inner core into the target position of the intervertebral disc after local anesthesia of the skin. The second step is to remove the inner core, insert a guide wire into the hollow puncture needle, and replace the puncture needle after insertion into the target position. The third step is to further insert other surgical instruments along the guide wire for further surgical operations. Due to the deep location of the intervertebral disc and the long needle tract, the puncture technique requires high standards. After local anesthesia on the skin, repeated fluoroscopy with the assistance of X-ray fluoroscopy is often required to confirm that the puncture needle has reached the target position. At this time, local infiltration anesthesia of the needle tip can be performed, but it is difficult to perform needle tract infiltration anesthesia. Currently, when using ordinary puncture needles for local anesthesia, there is insufficient needle tract anesthesia. In the third step of perforaminal endoscopic lumbar discectomy, patients experience severe pain during the operation. The pain is often not effective even after adding analgesics, basic anesthesia, or using additional puncture needles for local infiltration anesthesia. This leads to a poor surgical experience for patients, inability to cooperate well, and greatly increases the risk of surgery.

[0003] Currently, the most commonly used disposable intervertebral disc puncture needle set is the one with national medical device registration number 20213140513. It includes an 18G outer sleeve, a 20G dilator needle, a 20G blunt-tip puncture needle, and a 22G moldable puncture needle. After local anesthesia at the puncture site, the 18G outer sleeve and 20G dilator needle are used to puncture the skin and deep fascia. The 20G dilator needle is then removed and replaced with a 20G blunt-tip puncture needle. Once the target location is reached, the 22G moldable puncture needle can be inserted to complete the injection of medication or contrast agent. However, this solution still does not solve the problem of insufficient needle tract infiltration anesthesia. The puncture needle only has an interface at the upper end of the needle body for connecting to the liquid outlet of the syringe, and a circular or elliptical outlet is set on the bottom side of the needle tip. The anesthetic can only be infiltrated into the surrounding tissues through the opening of the needle tip. The range of anesthesia is very small, and it only solves the anesthesia problem of the skin at the tail end and the tip of the puncture needle tract. The middle part of the puncture needle tract is not effectively anesthetized, which causes the patient to experience severe pain when other instruments are further inserted along the needle tract. Even after adding basic anesthesia or using another puncture needle for repeated needle tract puncture infiltration anesthesia, the effect is still poor, which leads to obvious surgical pain, poor experience, and inability to cooperate well in the patient during the operation, greatly increasing the risk of surgery.

[0004] Therefore, how to provide a disc puncture angiography needle kit that can perform local infiltration anesthesia in the needle tract, thereby effectively solving the problem of severe pain in patients caused by insufficient local infiltration anesthesia in the middle of the needle tract during puncture, is an urgent problem that technical personnel in this field need to solve. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a disc puncture angiography needle kit that can perform local infiltration anesthesia through the needle tract, thereby effectively avoiding severe pain during the operation of inserting other surgical instruments through the guide wire after the puncture needle is placed in the target position.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the intervertebral disc puncture angiography needle kit for local infiltration anesthesia of the needle tract comprises a guide wire, a solid sharp-headed inner core and a hollow flat-headed puncture needle, the sharp-headed inner core can be inserted into the flat-headed puncture needle to form an early puncture needle tract, the guide wire can be inserted into the flat-headed puncture needle after the sharp-headed inner core is pulled out and guided to the distal end of the puncture needle tract, and also comprises an outer sleeve, the outer sleeve is hollow and forms a accommodating cavity inside, the upper and lower ends of the outer sleeve are both provided with perforations only for the guide wire to pass through, the outer sleeve can be inserted into the puncture needle tract along the guide wire after the flat-headed puncture needle is withdrawn, a medicine outlet hole is penetrated on the wall of the outer sleeve, and a connecting port for connecting a syringe is also provided on the side of the outer sleeve, the connecting port is connected to the accommodating cavity and together with the medicine outlet hole forms an injection channel for local infiltration anesthesia.

[0007] In order to allow the local anesthetic entering the connection port to flow out better from the drug outlet, preferably, the inner diameter of the perforation is adapted to the outer diameter of the guide wire. When the guide wire is passed through the upper and lower perforations, the guide wire can block the two perforations to form a closed upper and lower end of the outer sleeve.

[0008] In order to more evenly inject local anesthetics in the puncture needle tract, thereby making the local infiltration anesthesia inside the puncture needle tract more sufficient, preferably, there are multiple drug outlet holes, and each of the drug outlet holes is arranged at intervals along the circumference and / or length direction of the outer sleeve.

[0009] In order to achieve a better local infiltration anesthesia effect in the puncture needle tract, preferably, the drug outlet holes are arranged at intervals along the length direction of the outer sleeve to form multiple rows, and the drug outlet holes in two adjacent rows are staggered.

[0010] In order to ensure that the puncture needle channel is evenly infiltrated with anesthetic while ensuring the strength of the outer sleeve and avoiding the outer sleeve from breaking due to the opening of multiple drug outlet holes on the tube wall, preferably, the spacing of the drug outlet holes in the length direction of the outer sleeve gradually increases from bottom to top, and the aperture of each drug outlet hole gradually decreases from bottom to top along the length direction of the outer sleeve.

[0011] In order to make the connecting port better adapt to the syringe, preferably, the outer sleeve further has a protruding connecting portion adapted to the syringe on the side near the upper end, and the connecting port is provided on the connecting portion.

[0012] In order to make the sharp-head inner core better fit the needle track of the flat-head puncture needle, preferably, the sharp-head inner core includes a needle core body, and the needle core body is elastic and can be deformed and bent as needed during puncture.

[0013] Compared with the prior art, the advantages of the present invention are: by providing an outer sleeve and providing a accommodating cavity inside the outer sleeve, perforations are respectively provided at the upper and lower ends of the outer sleeve for the guide wire to pass through, and a penetrating drug outlet hole is provided on the wall of the outer sleeve. At the same time, a connecting port for connecting a syringe is provided on the side of the outer sleeve, so that the connecting port can be connected to the accommodating cavity and together with the drug outlet hole form an anesthetic injection channel for the middle part of the puncture needle tract. When local infiltration anesthesia of the middle part of the puncture needle tract is required, the guide wire can be inserted into the perforations at the upper and lower ends of the outer sleeve to seal the two perforations, and then the anesthetic is injected into the accommodating cavity from the connecting port through the syringe. The anesthetic will finally flow out from the drug outlet hole on the side wall of the outer sleeve to achieve infiltration anesthesia of the middle part of the puncture needle tract, thereby solving the problem that the middle area of ​​the puncture needle tract cannot be effectively anesthetized in the prior art, thereby alleviating the severe pain of the patient during the operation, enabling the patient to better cooperate with the operation, greatly reducing the surgical risk, and shortening the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0015] Figure 2 Schematic diagram of the structure of the outer sleeve and the guide wire in this embodiment;

[0016] Figure 3 Schematic cross-sectional view of the outer sleeve in this embodiment;

[0017] Figure 4 Schematic cross-sectional view of the outer sleeve and the guide wire in this embodiment;

[0018] Figure 5 This is a schematic diagram of the structure of the sharp-head inner core and the flat-head puncture needle in this embodiment;

[0019] Figure 6 This is a structural diagram of the guide wire and the flat-head puncture needle in this embodiment;

[0020] Figure 7 This is a schematic diagram of infiltration anesthesia performed in this embodiment (where A shows the puncture needle tract and B shows the syringe). DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 7 The present invention is shown in FIG. 1 , which is a preferred embodiment of the present invention. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract mainly comprises a guide wire 1 , a sharp inner core 2 , a flat-head puncture needle 3 , and an outer sleeve 4 .

[0023] refer to Figures 1 to 5 As shown, the sharp-headed inner core 2 is solid and the flat-headed puncture needle 3 is hollow. The sharp-headed inner core 2 can be inserted into the flat-headed puncture needle 3 to form an early puncture needle track A. The guide wire 1 can be inserted into the flat-headed puncture needle 3 after the sharp-headed inner core 2 is pulled out and guided to the distal end of the puncture needle track A. The outer sleeve 4 is hollow and forms an accommodating cavity 4a inside. The upper and lower ends of the outer sleeve 4 are provided with a perforation 4b only for the guide wire 1 to pass through. The outer sleeve 4 can be inserted into the puncture needle track A along the guide wire 1 after the flat-headed puncture needle 3 is withdrawn. A drug outlet 4c is provided on the wall of the outer sleeve 4. The side of the outer sleeve 4 is also provided with a connecting port 4d for connecting the syringe B. The connecting port 4d is connected to the accommodating cavity 4a and forms an injection channel for local infiltration anesthesia together with the drug outlet 4c.

[0024] Among them, in order to make the local anesthetic drug coming in from the connection port 4d flow out from the drug outlet 4c better, refer to Figure 2 As shown, in this embodiment, the inner diameter of the through hole 4b on the outer sleeve 4 is adapted to the outer diameter of the guide wire 1. When the guide wire 1 is passed through the upper and lower through holes 4b, the guide wire 1 can block the two through holes 4b and form a closed upper and lower end of the outer sleeve 4.

[0025] Secondly, in order to inject the local anesthetic more evenly in the puncture needle tract A, so that the local infiltration anesthesia inside the puncture needle tract A can be more sufficient, refer to Figure 2 As shown, in this embodiment, a plurality of medicine outlet holes 4c are provided, and each medicine outlet hole 4c is spaced apart along the circumferential direction and the longitudinal direction of the outer sleeve 4, so that the medicine outlet holes 4c are evenly distributed.

[0026] Furthermore, in this embodiment, in order to achieve a better local infiltration anesthesia effect in the puncture needle tract, the drug outlet holes 4c are intentionally arranged at intervals along the length direction of the outer sleeve 4 to form multiple rows, and the drug outlet holes 4c in two adjacent rows are staggered.

[0027] In addition, in this embodiment, in order to ensure that the puncture needle channel can be evenly infiltrated by the local anesthetic, the strength of the outer sleeve 4 can be guaranteed to avoid the outer sleeve 4 from being broken due to the multiple drug outlet holes 4c on the wall of the outer sleeve 4. Figure 2 As shown, the intervals between the medicine outlet holes 4c in the length direction of the outer sleeve 4 gradually increase from bottom to top, and the apertures of the medicine outlet holes 4c gradually decrease from bottom to top along the length direction of the outer sleeve 4.

[0028] In this embodiment, in order to make the connection port 4d better fit the syringe B, refer to Figure 1 As shown, a connecting portion 4e capable of adapting to the syringe B is protruded from the side of the outer sleeve 4 near the upper end, and a connecting port 4d is provided on the connecting portion 4e.

[0029] In this embodiment, in order to make the sharp inner core 2 better fit the needle path of the flat-head puncture needle 3, Figure 1 As shown, the sharp-tip inner core 2 includes a needle core body 2a. The needle core body 2a is elastic and can be deformed and bent as needed during puncture, thereby making it have a certain plasticity.

[0030] The intervertebral disc puncture angiography needle kit of this embodiment can be used for local infiltration anesthesia of the needle tract. The operation steps of the puncture operation are as follows: first, local anesthesia is applied to the puncture point on the skin surface, and the sharp-headed inner core 2 is inserted into the flat-headed puncture needle 3 to form a complete puncture needle (this combination state refers to Figure 5 As shown), the needle penetrates the skin, subcutaneous tissue and deep tissue to enter the target location of the intervertebral disc. This process may require multiple confirmations of the needle position under X-ray fluoroscopy. Once the position is confirmed, the needle tip can be used to perform local anesthesia on the target location of the intervertebral disc. However, the needle tip cannot be withdrawn at this time, and the middle section of the puncture needle channel A is not effectively anesthetized. Then, the sharp-headed inner core 2 is pulled out, and the guide wire 1 is inserted into the flat-headed puncture needle 3 to the target location of the intervertebral disc (this combination state refers to Figure 6 As shown), then pull out the flat-head puncture needle 3, keep the guide wire 1 at the target position, and then insert the outer sleeve 4 along the guide wire 1 to the target position (this combination state refers to Figure 2 As shown), at this time, the two holes 4b at the upper and lower ends of the outer sleeve 4 are closed by the guide wire 1 penetrated therethrough, and the syringe B can be connected through the connection port 4d on the outer sleeve 4 to push the local anesthetic drug, and the drug will pass through the drug outlet hole 4c of the outer sleeve 4 to perform local anesthesia on the middle section of the puncture needle tract A (this combination state refers to Figure 7As shown), after the anesthesia of the middle section of the puncture needle channel A is completed, the outer sleeve 4 is pulled out, the guide wire 1 is retained, and then the large-diameter hollow lumbar intervertebral foraminal endoscopic surgical instruments used in the next operation, such as guide rods, dilation tubes and ring saws, are inserted along the guide wire 1. Since the middle section of the puncture needle channel A is also subjected to local anesthesia infiltration anesthesia, no pain will occur during the process of inserting the instruments, so that the patient can better cooperate with the operation, greatly reducing the risk of the operation and shortening the operation time.

[0031] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A disc puncture angiography needle kit capable of performing local infiltration anesthesia of the needle tract, comprising a guide wire (1), a solid sharp-headed inner core (2), and a hollow flat-headed puncture needle (3), wherein the sharp-headed inner core (2) can be inserted into the flat-headed puncture needle (3) to form an early puncture needle tract (A), and the guide wire (1) can be inserted into the flat-headed puncture needle (3) after the sharp-headed inner core (2) is pulled out and guided to the distal end of the puncture needle tract (A), characterized in that: The invention also includes an outer sleeve (4), which is hollow and forms an accommodating cavity (4a) inside. The upper and lower ends of the outer sleeve (4) are provided with perforations (4b) for the guide wire (1) to pass through. The outer sleeve (4) can be inserted into the puncture needle channel (A) along the guide wire (1) after the flat-head puncture needle (3) is withdrawn. A drug outlet hole (4c) is provided through the wall of the outer sleeve (4). The side of the outer sleeve (4) is also provided with a connecting port (4d) for connecting to a syringe (B). The connecting port (4d) is connected to the accommodating cavity (4a) and forms an injection channel for local infiltration anesthesia together with the drug outlet hole (4c).

2. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to claim 1, characterized in that: The inner diameter of the through hole (4b) is adapted to the outer diameter of the guide wire (1). When the guide wire (1) is passed through the upper and lower through holes (4b), the guide wire (1) can block the two through holes (4b) to form a closed upper and lower end of the outer sleeve (4).

3. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to claim 1, characterized in that: There are a plurality of medicine outlet holes (4c), and each of the medicine outlet holes (4c) is arranged at intervals along the circumferential direction and / or the longitudinal direction of the outer sleeve (4).

4. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to claim 3, characterized in that: The medicine outlet holes (4c) are arranged at intervals along the length direction of the outer sleeve (4) to form multiple rows, and the medicine outlet holes (4c) in two adjacent rows are staggered.

5. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to claim 3, characterized in that: The intervals between the medicine outlet holes (4c) in the length direction of the outer sleeve (4) gradually increase from bottom to top, and the apertures of the medicine outlet holes (4c) gradually decrease from bottom to top along the length direction of the outer sleeve (4).

6. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to claim 1, characterized in that: A connecting portion (4e) capable of adapting to a syringe (B) is also protruded from the side portion of the outer sleeve (4) near the upper end, and the connecting port (4d) is provided on the connecting portion (4e).

7. The intervertebral disc puncture and angiography needle kit capable of performing local infiltration anesthesia in the needle tract according to any one of claims 1 to 6, characterized in that: The sharp-tip inner core (2) comprises a needle core body (2a), the needle core body (2a) is elastic, and the needle core body (2a) can be deformed and bent as required during puncture.

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