Intervertebral foramen endoscope puncture outfit with injection, positioning and diversion functions

Abstract

The utility model relates to an intervertebral foramen endoscope puncture outfit with injection, positioning and diversion functions, the puncture outfit is of a needle-shaped structure formed by a fillet at the front end of a conical cylinder, and a blunt head part is formed at the fillet part; the outer diameter of the front end of the conical cylinder is 5mm, the outer diameter of the rear end of the conical cylinder is 6mm, and the length of the conical cylinder is 300mm; a central hole and a diversion hole which are axially through are formed in the conical column body, the central hole is located at the central axis position of the conical column body, and the diversion hole is located at the eccentric position of one side of the central hole; an eccentric injector inserting hole is formed in the rear end of the conical cylinder, the rear end of the center hole is located in the injector inserting hole, the injector inserting hole is communicated with the center hole, and the injector inserting hole is not communicated with the diversion hole. Good tactile feedback of a blunt object is utilized, and the hand feeling of a doctor is combined to assist the puncture outfit in quick positioning, so that the perspective frequency is reduced, radiation injury is reduced, and the puncture outfit has the functions of puncture, anesthetic injection, quick positioning and accurate diversion, and belongs to an intervertebral operation auxiliary instrument.

Description

Technical Field

[0001] The utility model relates to an intervertebral operation assisting instrument, in particular to a foraminal puncture device with functions of injection, positioning and diversion. Background Art

[0002] The harm of medical radiation exposure to medical staff and patients has increasingly become a topic of concern. With the progress of technology, in the past decade or so, minimally invasive spinal surgery has entered a stage of rapid development, benefiting more and more patients with lumbar disc herniation. Among them, the foraminal endoscopic technique, as an extremely minimally invasive surgical method for treating lumbar disc herniation, has been favored by more and more spinal surgeons. However, at the same time, minimally invasive spinal surgery increasingly relies on X-ray fluoroscopy, inevitably causing radioactive damage to medical staff and patients, especially the carcinogenic risk. Therefore, the research on medical radiation in the field of spinal surgery is crucial. Currently, many attempts to reduce the X-ray exposure rate during foraminal endoscopic puncture and improve the puncture accuracy, such as external positioners, navigation devices, 3D printing technology, etc., are difficult to promote due to cumbersome operation or high cost. There is currently no very effective, economical and simple method to improve the puncture accuracy and reduce radiation exposure.

[0003] Brief introduction of the foraminal endoscopic puncture technique: The patient takes the prone position, the superior articular process of the target segment is located by fluoroscopy and marked, 10 - 12 cm lateral to the superior articular process at an oblique angle of 30° is used as the puncture point. First, local infiltration anesthesia is performed on the skin, and then a long puncture needle with a diameter of 1 mm is punctured towards the tip of the superior articular process. Through the fluoroscopic X-ray film, the angle and depth of the puncture needle are adjusted. Since the puncture needle is soft and has a long travel in soft tissues, the adjustment is relatively difficult, especially the fine adjustment is more difficult and requires multiple attempts and multiple fluoroscopies. When the target superior articular process is punctured, a guide needle is inserted, then the skin is dilated, the superior articular process is shaped, a working sleeve is inserted, and finally the discectomy operation is completed under the working sleeve. That is, preliminary fluoroscopic positioning - marking the puncture point - skin infiltration anesthesia - puncture - fluoroscopy and puncture needle position adjustment (multiple times) - precise positioning - inserting the guide needle - skin dilation - inserting the working sleeve for the operation. This surgical process has the following disadvantages: 1. During the operation, the step with the most fluoroscopy times is the puncture needle position adjustment step. Since the puncture needle needs to be adjusted multiple times, multiple fluoroscopies are required to determine, causing a lot of radiation damage, which is harmful to both patients and medical staff. According to statistics, the number of fluoroscopy times for a single foraminal endoscopic puncture can be as many as more than 50 times. 2. Only local infiltration anesthesia is performed before puncture, and the pain is still obvious. 3. The puncture needle has only one central positioning hole, and the position of the positioning hole is determined by the position of the puncture needle. The position of the positioning hole cannot be finely adjusted.

[0004] Existing puncture needles such as Figure 1As shown, the puncture needle is too sharp and soft. The puncture path passes through deep soft tissues, making it difficult to change the path and having no haptic feedback at all. It completely relies on X-ray fluoroscopy for adjustment, which not only poses a risk of radiation exposure but also consumes a large amount of surgical time, causing serious harm to both patients and doctors. Summary of the Invention

[0005] Aiming at the technical problems existing in the prior art, the purpose of the present utility model is to provide an intervertebral foramen endoscope puncture device that combines the haptic feedback of surgeons to assist in positioning, thereby significantly reducing the number of fluoroscopies, and having the functions of injection, positioning, and path change.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] An intervertebral foramen endoscope puncture device with the functions of injection, positioning, and path change. The puncture device is a needle-like structure formed by rounding the front end of a conical cylinder, and the rounded part forms a blunt head; the outer diameter of the front end of the conical cylinder is 5 mm, the outer diameter of the rear end of the conical cylinder is 6 mm, and the length of the conical cylinder is 300 mm; an axially penetrating central hole and a path-changing hole are provided inside the conical cylinder. The central hole is located on the central axis of the conical cylinder, and the path-changing hole is located at an eccentric position on one side of the central hole; an eccentric syringe insertion hole is provided at the rear end of the conical cylinder. The rear end of the central hole is located inside the syringe insertion hole. The syringe insertion hole is communicated with the central hole and not communicated with the path-changing hole.

[0008] As a preference, the inner diameter of the central hole is 1 mm, the inner diameter of the path-changing hole is 1 mm, the distance between the central hole and the path-changing hole is 1 mm, and the length of the rounded part is less than 10 mm.

[0009] As a preference, the inner diameter of the syringe insertion hole is 3 mm, and the depth is 5 - 7 mm.

[0010] As a preference, a holding structure for facilitating hand holding is provided on the upper section of the conical cylinder.

[0011] As a preference, the holding structure is a holding ring provided on the outer wall of the conical cylinder.

[0012] As a preference, the holding structure is a friction layer provided on the outer wall of the conical cylinder.

[0013] As a preference, the material of the puncture device is stainless steel.

[0014] The principle of the present utility model is:

[0015] Puncture: Design a thicker trocar and improve the surgical method. Incise the skin before puncture so that a thicker round and blunt trocar can also pass through the muscle to reach the target position - the articular process. The tail end can be connected to a syringe, and anesthetic can be injected while inserting. Moreover, a thick and blunt puncture needle is not likely to cause damage to nerve tissues.

[0016] Positioning: Since the trocar becomes thicker and has a thicker round and blunt head, the surgeon touches the surface of the affected bone through the trocar. The surgeon can probe the unique contour of the superior articular process with the round and blunt head and judge whether it is in place according to surgical experience (tactile sensation). With the assistance of the trocar of the present utility model, puncture positioning can be completed only after 1 - 3 adjustments. Thus, the number of fluoroscopy times is only about several to ten times (up to more than fifty times in the prior art), which can greatly shorten the operation time and reduce radiation exposure.

[0017] Injection: Design a central hole and a syringe jack. The syringe jack can be directly connected to a syringe to achieve injecting anesthetic drugs while puncturing and local anesthesia while puncturing, so as to reduce the pain of the patient. If pain occurs during the puncture process, anesthetic drugs can be added at any time.

[0018] Channel modification: Since the trocar becomes thicker, there is space inside to accommodate the central hole and the channel modification hole. Design a central hole located in the middle and an eccentric channel modification hole. During the puncture process, aim at the junction of the articular process and the transverse process as the landing point. After taking an X-ray film to confirm that the position is correct, make fine adjustments to the position and direction of the trocar (since the muscle itself has elasticity and can accept slight movement of the position and angle of the trocar), or use the channel modification hole for adjustment (when it cannot be directly moved). For example, when performing precise positioning, if the position of the central hole still does not accurately face the affected area and there is still an offset of about 2 mm, the trocar rotates to rotate the channel modification hole to the target position, and then operate using the channel modification hole instead of the central hole.

[0019] The present utility model has the following advantages:

[0020] 1. Design a thicker trocar with a round and blunt head. Utilize the good tactile feedback of round and blunt objects, and combine with the surgeon's tactile sensation to assist the trocar in quickly positioning, thereby reducing the number of fluoroscopy times and reducing the harm of radiation.

[0021] 2. It has the functions of puncture, injecting anesthetic, rapid positioning, and precise channel modification.

[0022] 3. The structure is simple and the operation is convenient.

[0023] 4. Set a holding structure for convenient hand-held operation.

[0024] 5. It is easy to promote and has strong practicability. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of a prior art puncture needle.

[0026] Figure 2 It is a side view of a prior art puncture needle.

[0027] Figure 3 It is a schematic structural diagram of a trocar.

[0028] Figure 4 It is a schematic structural diagram of a trocar connected to a syringe.

[0029] Figure 5 It is a cross-sectional view of a trocar.

[0030] Figure 6 It is a schematic structural diagram of the rear end of a trocar.

[0031] Figure 7 It is a schematic structural diagram of the front end of a trocar.

[0032] Figure 8 It is a dimension diagram of a trocar.

[0033] Figure 9 It is a schematic structural diagram of the upper section of the trocar in the second embodiment.

[0034] Figure 10 It is a schematic structural diagram of the upper section of the trocar in the third embodiment.

[0035] In the figure, 1 - central hole, 2 - diversion hole, 3 - syringe socket, 4 - head, 5 is a cylindrical cone, 6 is a gripping ring, and 7 is a friction layer.

[0036] a - outer diameter of the front end of the conical cylinder, b - outer diameter of the rear end of the cylindrical cylinder, c - length of the head, d - distance between the central hole and the diversion hole, e - inner diameter of the syringe socket, f - inner diameter depth of the syringe socket. Specific embodiments

[0037] The present utility model will be further described in detail below in conjunction with specific embodiments.

[0038] Embodiment 1

[0039] A foraminal endoscopic trocar with injection, positioning, and diversion functions. The trocar is a needle-like structure formed by rounding the front end of a conical cylinder, and the rounded part forms a blunt head. The conical cylinder is a cylindrical-like structure with a small taper on the outer wall. The outer diameter of the front end of the conical cylinder is 5 mm (i.e. Figure 8The size of the front end of the dotted line in the middle head), the outer diameter of the rear end of the conical cylinder is 6 mm, and the length of the conical cylinder is 300 mm. An axially penetrating central hole and a diversion hole are provided inside the conical cylinder. The central hole is located at the central axis position of the conical cylinder, and the diversion hole is located at an eccentric position on one side of the central hole. An eccentric syringe insertion hole is provided at the rear end of the conical cylinder. The rear end of the central hole is located inside the syringe insertion hole. The syringe insertion hole is communicated with the central hole and not communicated with the diversion hole.

[0040] To facilitate the operation of minimally invasive surgery, the inner diameter of the central hole is 1 mm, and the inner diameter of the diversion hole is 1 mm, which can be used for the insertion of a 1-mm guide needle. To achieve fine position adjustment, there is a 1-mm gap between the central hole and the diversion hole. When the aforementioned dimensions are adopted, the front end of the diversion hole will penetrate the side wall of the head. In order that the length of the penetrating part cannot be too long, the length of the rounded corner part is less than 10 mm.

[0041] To be adapted to a common syringe, the inner diameter of the syringe insertion hole is 3 mm and the depth is 6 mm. Thus, the straight tube at the front end of the syringe can be directly inserted to complete the docking. The center of the syringe insertion hole and the center of the diversion hole are on the same diameter, and the center of the syringe insertion hole deviates from the center of the central hole.

[0042] The material of the trocar is stainless steel.

[0043] On the basis of the original, the trocar of the present utility model improves the operation method and operation tools. As a tool specifically used for foraminal endoscopic puncture, it has the functions of reducing the puncture difficulty, simplifying the puncture process, and reducing the X-ray exposure rate, and is worthy of being vigorously promoted. First, the principle utilized is that a thick and blunt metal object has good tactile feedback on the bone surface. Through the operator's hand feeling, multiple adjustments can be reduced. Moreover, due to the thick and hard trocar, the blocking effect of soft tissues is small, the hand feeling during adjustment is strong, and it is relatively easier.

[0044] The operation steps are as follows:

[0045] (1) Preliminary fluoroscopic positioning.

[0046] (2) Mark the needle insertion point.

[0047] (3) Perform local anesthesia at the skin puncture point.

[0048] (4) Incise the skin.

[0049] (5) Puncture while anesthetizing. Aim at the marked point of the superior articular process and insert this trocar. Then connect a syringe to the end of the trocar. Anesthetic drugs can be injected while inserting the needle to reduce the pain of the patient.

[0050] (6) Puncture device positioning and fluoroscopy. When reaching the bone surface, the operator uses the sense of touch to explore the unique contour of the superior articular process, and then takes a fluoroscopic X-ray film to generally understand the position of the puncture device. If the position is appropriate, subsequent surgical operations can be directly carried out through the central hole. If fine adjustment is needed, there is a diversion hole on the side of the puncture needle. A guide wire can be inserted through this hole, and on this basis, anesthetic is continuously injected to anesthetize the superior articular process for subsequent arthrodesis; after fine adjustment, an X-ray film can be taken again to determine whether the position of the guide needle is appropriate. If not, fine adjustment can be carried out again. It should be noted here that the muscle itself has elasticity, and fine adjustment of the position or angle of the puncture device can also be slightly carried out.

[0051] (7) After confirming that the position is appropriate, use the central hole or the diversion hole to perform the next arthrodesis in the same traditional method.

[0052] The puncture device of the present utility model perfectly combines the advantages of the diversion device and the puncture needle, and uses the good tactile feedback of the blunt metal probe to quickly find the target position (the tip of the superior articular process) through the exploration method. After simply taking a film to confirm the position or through fine adjustment, an accurate puncture positioning can be obtained, saving a large amount of surgical time. More importantly, it reduces a large amount of radiation damage, and is simple to operate, with low cost, having the advantages of being vigorously promoted.

[0053] Embodiment 2

[0054] On the basis of Embodiment 1, the puncture device of this embodiment is provided with a holding structure for facilitating hand holding on the upper section of the conical cylinder. The holding structure is a holding ring arranged on the outer wall of the conical cylinder and is not easy to slip.

[0055] The parts not mentioned in this embodiment are the same as those in Embodiment 1.

[0056] Embodiment 3

[0057] On the basis of Embodiment 1, the puncture device of this embodiment is provided with a holding structure for facilitating hand holding on the upper section of the conical cylinder. The holding structure is a friction layer arranged on the outer wall of the conical cylinder. The friction layer can be a rough structure or a concave-convex structure.

[0058] The parts not mentioned in this embodiment are the same as those in Embodiment 1.

[0059] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. A transforaminal endoscopic puncture device with injection, positioning and diversion functions, characterized by: The puncture device is a needle-shaped structure formed by rounding the front end of a conical cylinder, and the rounded corner forms a blunt head; the outer diameter of the front end of the conical cylinder is 5mm, the outer diameter of the rear end of the conical cylinder is 6mm, and the length of the conical cylinder is 300mm; an axially penetrating center hole and a diversion hole are arranged in the conical cylinder, the center hole is located at the central axis position of the conical cylinder, and the diversion hole is located at an eccentric position on one side of the center hole; an eccentric syringe socket is arranged at the rear end of the conical cylinder, the rear end of the center hole is located in the syringe socket, the syringe socket is connected to the center hole, and the syringe socket is not connected to the diversion hole.

2. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 1, characterized in that: The inner diameter of the center hole is 1 mm, the inner diameter of the redirecting hole is 1 mm, the center hole and the redirecting hole are spaced 1 mm apart, and the length of the rounded corner portion is less than 10 mm.

3. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 1, characterized in that: The syringe bore has an inner diameter of 3 mm and a depth of 5-7 mm.

4. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 1, characterized in that: The upper section of the conical cylinder is provided with a holding structure which is convenient for hand holding.

5. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 4, characterized in that: The holding structure is a holding ring arranged on the outer wall of the conical cylinder.

6. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 4, characterized in that: The gripping structure is a friction layer arranged on the outer wall of the conical cylinder.

7. The transforaminal endoscopic puncture device with injection, positioning and diversion functions according to claim 1, characterized in that: The material of the trocar is stainless steel.

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