A puncture system suitable for a prone position LLIF surgery

Abstract

The utility model discloses a kind of puncture systems suitable for prone position LLIF operation, including puncture needle, puncture sleeve and holder, puncture sleeve is sleeved in the outside of puncture needle, puncture needle both ends are out of puncture sleeve, the front end of puncture needle is pointed end, self-tapping thread for puncturing patient skin is equipped on puncture needle, self-tapping thread extends to pointed end, one end of puncture sleeve close to holder is equipped with electricity connection column, puncture sleeve and electricity connection column can all conduct electricity, holder is installed in the tail of puncture needle.Puncture sleeve has conductivity, can carry out electrophysiological monitoring in puncture process, prevent damaging to lumbar plexus nerve.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a puncture system suitable for prone LLIF surgery. Background Technology

[0002] Currently, lumbar fusion surgery is widely used in the treatment of lumbar degenerative diseases and has achieved satisfactory results. Previously, posterior lumbar fusion surgery was commonly used clinically, but this surgical approach carries a high risk of complications. With advancements in medical technology, minimally invasive techniques have begun to be widely applied in the field of spinal neurosurgery, and oblique lateral interbody fusion (OLIF) is a novel minimally invasive interbody fusion surgery that has attracted considerable clinical attention in recent years.

[0003] Oblique lateral interbody fusion (OLIF) is a popular minimally invasive technique for the lumbar spine. It was first introduced by Mayer[1] in 1997, and Silvestre[2] first reported and officially named this minimally invasive technique in 2012. The OLIF technique uses the anatomical gap between the aorta / inferior vena cava (IVC) and the psoas major muscle to enter the intervertebral disc space without opening the spinal canal and without damaging the posterior muscles, ligaments and bony structures. At the same time, because it can remove enough intervertebral disc tissue, the contact area between the fusion device and the endplate is large, which can greatly increase the support strength of the fusion device. Therefore, the technique and concept of OLIF have been rapidly promoted and applied internationally.

[0004] Traditional OLIF surgical approach: The patient is placed in the right lateral decubitus position, and an oblique incision is made in the left abdomen, entering the retroperitoneal space through the intermuscular spaces of the external oblique, internal oblique, and transversus abdominis muscles. A working channel is placed between the abdominal aorta and the psoas major muscle, through which lumbar discectomy and intervertebral fusion are performed.

[0005] Common internal fixation methods for OLIF:

[0006] Posterior percutaneous pedicle screw fixation is currently the "gold standard" in clinical application, effectively maintaining three-column stability, limiting flexion, extension, lateral bending, and rotational movements of the surgical segment, and reducing the incidence of fusion cage subsidence. However, it requires changing the patient from a lateral decubitus position to a prone position during the operation, increasing the operation and anesthesia time. Nerves may be damaged during the puncture procedure. Therefore, a puncture system suitable for prone LLIF surgery is needed, primarily to address the potential nerve damage during puncture, necessitating neurophysiological monitoring to avoid unnecessary nerve damage during the procedure. Utility Model Content

[0007] To address the shortcomings of existing technologies, this invention provides a puncture system suitable for prone LLIF surgery, which enables intraoperative neurophysiological monitoring and avoids unnecessary damage to human nerves during the procedure.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0009] A puncture system suitable for prone LLIF surgery includes a puncture needle, a puncture sleeve, and a holder. The puncture sleeve is fitted over the puncture needle, with both ends of the puncture needle extending out of the puncture sleeve. The front end of the puncture needle is a pointed tip, and the puncture needle has self-tapping threads for puncturing the patient's skin and flesh, extending to the pointed tip. A power terminal is installed at the end of the puncture sleeve near the holder. Both the puncture sleeve and the power terminal are conductive. The holder is installed at the tail end of the puncture needle.

[0010] Furthermore, the puncture sleeve includes a sleeve head and a sleeve body. The sleeve head is made of semi-transparent aluminum and is a certain distance from the self-tapping threads on the puncture needle. The sleeve body is fixed behind the sleeve head, and the power terminal is fixed at the tail of the sleeve body. The puncture needle penetrates through the sleeve head and the sleeve body.

[0011] Furthermore, the puncture sleeve is provided with a first through hole for the puncture needle to pass through, and a second through hole parallel to the first through hole. Both the first through hole and the second through hole pass through both ends of the puncture sleeve in the length direction.

[0012] Furthermore, the surface of the puncture sleeve is provided with a weight-reducing groove, which extends through both ends of the rectangular section of the puncture sleeve and is parallel to the first and second through holes.

[0013] Furthermore, the length of the puncture needle is ≥15cm and ≤20cm.

[0014] Furthermore, both the puncture sleeve and the holder are detachable from the puncture needle.

[0015] Furthermore, the holder includes a fastening sleeve, a sliding hammer, and a handle. The puncture needle passes through the fastening sleeve and the handle sequentially from front to back. The sliding hammer is fixedly sleeved on the outside of the fastening sleeve. The puncture needle and the fastening sleeve are interference-fitted. The thickness of the fastening sleeve and the front end of the handle are connected by threads. The handle is equipped with a folding handle. When the folding handle is folded, it locks the movement of the puncture needle relative to the handle. Rotating the folding handle can unlock the puncture needle.

[0016] Furthermore, the tip is triangular with three sharp edges.

[0017] This utility model has the following beneficial effects:

[0018] 1. The puncture needle has threads on its tip and a pointed end, making it easy to manually screw into the patient's abdominal cavity while preventing it from retracting during the procedure. An external puncture sleeve is designed to match the needle, facilitating the application of force during puncture.

[0019] 2. The puncture sleeve is conductive, enabling electrophysiological monitoring during the puncture process and preventing damage to the lumbar plexus nerves.

[0020] 3. The puncture tube has a certain width and length, with the length adapted to the human abdominal cavity, ranging from 15cm to 20cm.

[0021] 4. The head of the puncture sleeve is made of semi-transparent aluminum, which allows for better visualization of the contact of the puncture needle during imaging.

[0022] 5. Both the puncture sleeve and the holder are detachable from the puncture needle, making them easy to clean and store. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the puncture system according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0025] Figure 3 yes Figure 1 Front view of the puncture system;

[0026] Figure 4 yes Figure 1 A three-dimensional top view of the puncture system;

[0027] Figure 5 yes Figure 4 A three-dimensional sectional view of the puncture system along line AA;

[0028] Figure 6 yes Figure 5 A magnified view of a portion of the image;

[0029] Figure 7 yes Figure 4 Left view of the puncture system;

[0030] Figure 8 It is a 3D diagram of the handle;

[0031] Figure 9 It is a cross-sectional view of the handle;

[0032] Figure 10 It is a cross-sectional view of the assembly of the handle and the puncture needle;

[0033] Figure 11 yes Figure 10 A magnified view of a portion of the image. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] like Figures 1 to 11 As shown, this embodiment provides a puncture system suitable for prone LLIF surgery, including a puncture needle 1, a puncture sleeve 2, and a holder 3. The puncture sleeve 2 is sleeved over the puncture needle 1, with both ends of the puncture needle 1 extending out of the puncture sleeve 2. The front end of the puncture needle 1 is a tip 12, and the puncture needle 1 has self-tapping threads 11 for puncturing the patient's skin and flesh, extending to the tip 12. A power terminal 4 is installed at one end of the puncture sleeve 2 near the holder. Both the puncture sleeve and the power terminal are conductive. The holder 3 is installed at the tail of the puncture needle 1.

[0037] The tip 12 is preferably triangular, with three sharp edges, which allows for quick and effortless piercing of the patient's skin and flesh. Of course, the tip 12 can also take other shapes, such as a cone.

[0038] The puncture sleeve 2 is equipped with a grounding post 4, making the entire puncture sleeve 2 conductive. A live clamp for an electrophysiological testing device used in conjunction with the puncture system is held on the grounding post, thus energizing the puncture sleeve. The puncture sleeve 2 includes a sleeve head 21 and a sleeve body 22. The sleeve body 22 is fixed behind the sleeve head 21 (specifically, the sleeve head 21 and the sleeve body can be fitted together with a hole and fixed with a pin, or assembled by welding, gluing, etc.). The puncture needle 1 passes through the sleeve head 21 and the sleeve body 22. The sleeve head 21 is made of semi-transparent aluminum and is spaced a certain distance from the self-tapping threads 11 on the puncture needle 1. The semi-transparent aluminum construction of the sleeve head 21 allows for better visualization of the contact of the puncture needle 1 during imaging. The sleeve body 22 is made of opaque stainless steel. The electrical terminal 4 is fixed at the tail of the sleeve body 22 (near the end of the holder), which makes it less likely to interfere with the operation during surgery.

[0039] The shape of the puncture sleeve 2 matches the shape of the expansion baffle. The puncture sleeve 2 is generally flat. The front end face of the sleeve head 21 slopes backward from the middle to both sides in the width direction and smoothly mates with the sleeve body 22. The puncture sleeve 2 is smooth and easy to clean.

[0040] The length of the puncture needle 1 is ≥15cm and ≤20cm.

[0041] The puncture sleeve 2 has a first through hole for the puncture needle 1 to pass through, and a second through hole 23 parallel to the first through hole. Both the first through hole and the second through hole 23 extend through both ends of the puncture sleeve 2 along its length. The second through hole 23 serves as a spare hole. If the puncture needle 1 fails to puncture accurately, a second puncture needle can be quickly placed through the second through hole 23 without having to remove the puncture needle 1 from the first through hole and reinsert it.

[0042] To reduce the weight of the puncture sleeve 2, a weight-reducing groove 24 is provided on the surface of the puncture sleeve 2. In this embodiment, the weight-reducing groove 24 extends through both ends of the rectangular section of the puncture sleeve 2 and is curved. The weight-reducing groove 24 is parallel to the first through hole and the second through hole 23. This structure of the sleeve body 22 allows for the fabrication of a profile during mass production, which is then cut to a suitable length for use as the sleeve body. In other embodiments, the weight-reducing groove 24 may also take other shapes.

[0043] A holder 3 is fitted onto the tail end of the puncture needle 1. The holder 3 includes a fastening sleeve 31, a sliding hammer 32, and a handle 33. The puncture needle 1 passes through the fastening sleeve 31 and the handle 33 sequentially from front to back. The sliding hammer 32 is fixedly fitted onto the outside of the fastening sleeve 31, and the puncture needle 1 and the fastening sleeve 31 are press-fitted. The thickness of the fastening sleeve 31 is connected to the front end of the handle 33 by threads. Specifically, the rear end of the fastening sleeve 31 has an external thread (or an internal thread), and the front end of the handle 33 has a threaded hole (or an external thread). The two are tightened by threads. There is a gap or zero gap between the inner hole of the handle 33 and the puncture needle 1. The handle 33 is equipped with a folding handle 34 (refer to the MISUMI cam-type quick handle). When the folding handle 34 is folded, it locks the movement of the puncture needle 1 relative to the handle 33. Rotating the folding handle 34 unlocks the puncture needle 1.

[0044] When removing the puncture needle 1, slowly pull the puncture sleeve 2 out from the front end of the puncture needle 1. Rotate the folding handle 34 on the handle 33 to unlock the puncture needle 1. Then rotate the handle 33 to separate the threaded portion of the handle 33 and the fastening sleeve 31. Then remove the handle 33 from the puncture needle 1. Next, remove the fastening sleeve 31 from the puncture needle 1 by striking the sliding hammer 32. The front end of the fastening sleeve 31 is provided with a flange 35 to facilitate the application of force when putting the fastening sleeve 31 on or removing it from the puncture needle 1.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A puncture system suitable for a prone position LLIF surgery, characterized by, It includes a puncture needle, a puncture sleeve, and a holder. The puncture sleeve is fitted over the puncture needle, and both ends of the puncture needle extend out of the puncture sleeve. The front end of the puncture needle is a pointed tip. The puncture needle has self-tapping threads for puncturing the patient's skin and flesh, and the self-tapping threads extend to the pointed tip. A power terminal is installed at the end of the puncture sleeve near the holder. Both the puncture sleeve and the power terminal are conductive. The holder is installed at the tail of the puncture needle.

2. The puncture system suitable for TLIF surgery in prone position according to claim 1, characterized in that, The puncture sleeve includes a sleeve head and a sleeve body. The sleeve head is made of semi-transparent aluminum and is a certain distance away from the self-tapping threads on the puncture needle. The sleeve body is fixed behind the sleeve head, and the electrophysiological detection clip is fixed at the tail of the sleeve body. The puncture needle passes through the sleeve head and the sleeve body.

3. The puncture system suitable for TLIF surgery in prone position according to claim 2, characterized in that, The puncture sleeve has a first through hole for the puncture needle to pass through, and a second through hole parallel to the first through hole. Both the first through hole and the second through hole pass through both ends of the puncture sleeve along its length.

4. The puncture system suitable for a prone position LLIF surgery according to claim 3, characterized in that, The surface of the puncture sleeve is provided with a weight-reducing groove, which passes through both ends of the rectangular section of the puncture sleeve and is parallel to the first and second through holes.

5. The puncture system suitable for TLIF surgery in prone position according to claim 1, characterized in that, The length of the puncture needle is ≥15cm and ≤20cm.

6. The puncture system suitable for TLIF surgery in prone position according to claim 1, characterized in that, Both the puncture sleeve and the holder are detachable from the puncture needle.

7. The puncture system suitable for a prone position LLIF surgery according to claim 6, characterized in that, The holder includes a fastening sleeve, a sliding hammer, and a handle. The puncture needle passes through the fastening sleeve and the handle sequentially from front to back. The sliding hammer is fixedly sleeved on the outside of the fastening sleeve. The puncture needle and the fastening sleeve are interference-fitted. The thickness of the fastening sleeve and the front end of the handle are connected by threads. The handle is equipped with a folding handle. When the folding handle is folded, it locks the movement of the puncture needle relative to the handle. Rotating the folding handle can unlock the puncture needle.

8. The puncture system suitable for TLIF surgery in prone position according to claim 1, characterized in that, The tip is triangular with three sharp edges.

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