Nerve baffle device for intraspinal fiberscope operation

Abstract

The utility model relates to a nerve baffle device for an intra-spinal fiber endoscope operation, belongs to the technical field of medical instruments, and solves the technical problem that intra-spinal nerves are easily damaged when the intra-spinal fiber endoscope operation is performed. The nerve baffle device comprises a baffle body, a traction mechanism, a limiting component and a first spring, the baffle body comprises a traction end and an extending end, and the two ends of the first spring are connected with the traction end and the limiting component respectively. The traction mechanism comprises a traction wire and a traction assembly, and the two ends of the traction wire are fixedly connected with the traction end and the traction assembly respectively; the limiting component is located on the periphery of the baffle body, the first spring and the traction wire, and the limiting component is detachably and fixedly connected with the fiberscope. According to the nerve baffle device, the tip part of the positioned fiberscope cannot shake and move, so that the risk and the operation difficulty of an operation are reduced, and the success rate and the accuracy of the operation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a nerve baffle device for intraspinal fiberoptic endoscopy surgery. Background Art

[0002] Fiberoptic flexible endoscopes such as laparoscopes, gastroscopes, and bronchoscopes with fiber light sources and flexible lenses have been widely used in clinical practice. For lesions within the spinal canal, although there have been reports of using fiberoptic endoscopes to examine spinal canal lesions, due to the narrow space within the spinal canal, during treatments such as radiofrequency thermocoagulation or plasma ablation, it is extremely easy to damage the nerves near the lesion site, and even cause dural tear. Therefore, after the objective lens end of the fiberoptic endoscope reaches the optimal position, it is necessary to first block the nearby nerves.

[0003] Since the fiberoptic endoscope tube inserted into the spinal canal is not only slender but also curved, and the commonly used existing nerve baffle devices are non-flexible tubular shapes and cannot be applied to the fiberoptic endoscopes for spinal canal surgery. Moreover, when operating the nerve baffle device outside the patient's body, it is extremely easy to change the positioning position of the objective lens end of the fiberoptic endoscope, affecting the surgical effect. Summary of the Utility Model

[0004] In view of the above analysis, the embodiments of the utility model aim to provide a nerve baffle device for intraspinal fiberoptic endoscopy surgery to solve the technical problem of easily damaging the nerves within the spinal canal during fiberoptic endoscopy surgery.

[0005] The purpose of the utility model is mainly achieved through the following technical solutions:

[0006] A nerve baffle device for intraspinal fiberoptic endoscopy surgery includes a baffle body, a pulling mechanism, a limiting component, and a first spring; the baffle body includes a pulling end and an extending end, and the two ends of the first spring are respectively connected to the pulling end and the limiting component; the pulling mechanism includes a pulling wire and a pulling component, the two ends of the pulling wire are respectively fixedly connected to the pulling end and the pulling component, and operating the pulling component can make the baffle body extend or retract within the limiting component; the limiting component is located on the outer periphery of the baffle body, the first spring, and the pulling wire, and the limiting component is detachably connected to the fiberoptic endoscope.

[0007] Further, the limiting component includes a first limiting portion, the first limiting portion includes a first limiting surface, the first limiting surface is parallel to the end surface of the pulling end, and the first spring is located between the pulling end and the first limiting surface.

[0008] Further, the first limiting portion includes a pulling through hole, the pulling through hole is perpendicular to the first limiting surface and penetrates the first limiting portion.

[0009] Further, the pulling component includes a pulling member and a locking member, the pulling member is connected to one end of the pulling wire, the pulling member is a movable member, and the locking member can fix the position of the pulling member.

[0010] Further, the pulling member is a sliding member, and the pulling member can slide along the direction of the pulling wire on the locking member.

[0011] Further, the pulling member is a rotating member, and one end of the pulling wire is fixed to the outer periphery of the pulling member.

[0012] Further, the pulling member includes a locking block, the locking member includes a locking groove, and a plurality of locking grooves are arranged along the direction of the pulling wire.

[0013] Further, the pulling member further includes a slider and a second spring. A groove is provided on one side of the slider, the second spring is located in the groove, and one end of the locking block is inserted into the groove.

[0014] Further, the limiting member further includes a second limiting portion. The second limiting portion includes a limiting shell and an elastic band. The limiting shell is a concave plate, the baffle body is located in the concave space of the limiting shell, and both ends of the elastic band are fixedly connected to both sides of the limiting shell.

[0015] Further, the limiting member further includes a third limiting portion. The third limiting portion includes a snap ring, and a through pulling wire limiting channel is provided on the inner wall of the snap ring. Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0016] (1) In the nerve baffle device of the present utility model, by arranging a first spring between the baffle body and the limiting member, a thrust can be directly applied to the baffle body along the axis direction of the front end portion, so that the baffle body can smoothly extend or retract on the outer periphery of the front end portion, and the front end portion of the fiberoscope after positioning will not be shaken and displaced, reducing the surgical risk and operation difficulty, and improving the surgical success rate and accuracy.

[0017] (2) In the nerve baffle device of the present utility model, by using a pulling wire to connect the baffle body, the problem of bending of the lens tube of the fiberoscope is solved, and when the relatively independent baffle body expands and contracts, it will not interfere with the position and posture of the fiberoscope.

[0018] (3) In the nerve baffle device of the present utility model, by providing a movable pulling member, the length of the pulling wire in the patient's body can be controlled outside the patient's body, so as to control the extending length of the baffle body.

[0019] (4) In the nerve baffle device of the present utility model, through the locking action between the clamping block and the plurality of locking grooves, the baffle body can be locked at an appropriate position in the axis direction of the front end portion without being fixed by hand.

[0020] (5) In the nerve baffle device of the present utility model, by providing a second spring, the locking can be released by simply pressing the locking block with one hand, making the external control of the baffle body during the operation simple and easy.

[0021] (6) The nerve baffle device of the present utility model can limit both the radial position and the circumferential position of the baffle body by setting the first limiting part, so that the baffle body can only move along the axis direction, achieving the effect of smoothly extending or retracting linearly on the outer periphery of the distal end of the fiber endoscope.

[0022] (7) The nerve baffle device of the present utility model can ensure that the first spring only applies a force to the baffle body in the axis direction by setting the second limiting part, effectively avoiding interference with the position of the fiber endoscope when the baffle body extends.

[0023] (8) The nerve baffle device of the present utility model can ensure that the pulling wire is fully attached to the body of the fiber endoscope without being twisted or separated from the body of the fiber endoscope by setting the third limiting part.

[0024] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the following content, and some advantages can be made obvious from the description or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained through the content specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same components.

[0026] Figure 1 It is a schematic diagram of the overall structure of the nerve baffle device for a specific embodiment;

[0027] Figure 2 It is a schematic diagram of the partial structure of the nerve baffle device for a specific embodiment;

[0028] Figure 3 It is a schematic diagram of the structure of the pulling component of the nerve baffle device for a specific embodiment;

[0029] Figure 4 It is a sectional view of the pulling component of the nerve baffle device for a specific embodiment;

[0030] Figure 5 It is a schematic diagram of the structure of the limiting component of the nerve baffle device for a specific embodiment.

[0031] Reference Signs:

[0032] 1-baffle body; 11-pulling end; 12-extending end; 2-pulling mechanism; 21-pulling wire; 22-pulling assembly; 221-pulling member; 2211-locking block; 22111-pressing portion; 22112-block; 2212-slider; 22121-groove; 2213-second spring; 222-locking member; 2221-slide groove; 2222-locking groove; 3-limiting component; 31-first limiting portion; 311-limiting shell; 312-elastic belt; 32-second limiting portion; 33-third limiting portion; 331-clamping ring; 332-pulling wire limiting channel; 333-limiting strip; 4-first spring. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] A specific embodiment of the utility model is as follows Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a nerve baffle device for intraspinal fiberscope surgery, comprising a baffle body 1, a pulling mechanism 2, a limiting component 3 and a first spring 4. The limiting component 3 can limit the baffle body 1 to the periphery of the front end of the fiberscope, the pulling mechanism 2 comprises a pulling wire 21 and a pulling assembly 22, the two ends of the pulling wire 21 are respectively fixedly connected to the baffle body 1 and the pulling assembly 22, and the first spring 4 is a compression spring arranged along the axis of the fiberscope, and is arranged between the baffle body 1 and the limiting component 3.

[0035] When performing intraspinal fiberscope surgery, the nerve baffle device of the utility model is first used to tightly fix the baffle body 1 and the pulling mechanism 2 together with the fiberscope through the limiting component 3. When the tip of the fiberscope is located at the optimal surgical position and is ready to perform ablation or thermocoagulation surgery, the pulling component 22 is operated outside the patient's body and the pulling wire 21 is released, so that the first spring 4 in a compressed state can push the baffle body 1 to extend out of the tip of the fiberscope, thereby shielding and protecting the nerves at the surgical site in the spinal canal.

[0036] The nerve baffle device of this embodiment can apply a thrust directly along the axial direction of the tip end portion on the baffle body 1 by setting a first spring 4 between the baffle body 1 and the limiting component 3, so that the baffle body 1 can be smoothly extended or retracted at the periphery of the tip end portion without causing the tip end of the positioned fiberscope to shake or move, thereby reducing the risk and difficulty of the operation and improving the success rate and accuracy of the operation.

[0037] Specifically, Figure 2As shown, the baffle body 1 is an arc-shaped plate, and the arc-shaped inner wall of the baffle body 1 matches the outer periphery of the distal end of the fiberoscope. Optionally, the baffle body 1 is a tongue-shaped plate, including a pulling end 11 and a protruding end 12. The tip of the tongue-shaped plate is the protruding end 12; two first springs 4 are respectively arranged on both sides of the end face of the pulling end 11, and a pulling wire 21 is arranged between the two first springs 4. One end of the pulling wire 21 is fixed at the center of the pulling end 11. Along the axial line direction of the distal end, the first spring 4 applies a thrust force to the baffle body 1, and the pulling wire 21 applies a pulling force to the baffle body 1. The two opposite acting forces directly act on the pulling end 11 of the baffle body 1, avoiding interference with the position of the fiberoscope during the operation of the nerve baffle device outside the body. In addition, by using the pulling wire 21 to connect the baffle body 1, the problem of bending of the lens tube of the fiberoscope is also solved, enabling the relatively independent baffle body 1 to always be in contact with the distal end of the fiberoscope.

[0038] Optionally, two pulling wires 21 can also be arranged on both sides of the end face of the pulling end 11, and a first spring is arranged between the two pulling wires 21. Both arrangement schemes can ensure the balanced force on both sides of the baffle body 1 and stable position.

[0039] As Figure 2 and Figure 3 shown, the pulling mechanism 2 includes a pulling wire 21 and a pulling component 22. Both ends of the pulling wire 21 are fixedly connected to the pulling end 11 and the pulling component 22 respectively. The pulling component 22 includes a pulling member 221 and a locking member 222.

[0040] As Figure 4 shown, optionally, the pulling member 221 can slide on the locking member 222. The pulling member 221 includes a locking block 2211, a sliding block 2212 and a second spring 2213. The sliding block 2212 is fixedly connected to the other end of the pulling wire 21. A groove 22121 is provided on one side of the sliding block 2212. The second spring 2213 is arranged in the groove 22121. One end of the locking block 2211 is inserted into the groove 22121, and the other end is provided with a pressing portion 22111. A clamping block 22112 is also provided on the locking block 2211. The clamping block 22112 is located between the pressing portion 22111 and the sliding block 2212. Optionally, the clamping block 22112 is a semi-cylindrical body located on both sides of the locking block 2211.

[0041] The locking member 222 is a cuboid frame. Along the length direction inside the locking member 222, there is a chute 2221 that matches the outer surface of the slider 2212. One side of the chute 2221 is open. The pulling member 221 is assembled inside the locking member 222. The slider 2212 is located inside the chute 2221. The locking block 2211 is arranged perpendicular to the chute 2221. The pressing portion 22111 passes through the opening of the chute 2221 and is located outside the locking member 222. On the inner wall of the locking member 222 opposite to the chute 2221, there are multiple locking grooves 2222 that match the locking blocks 22112. The multiple locking grooves 2222 are arranged in parallel along the length direction of the chute 2221. One end of the locking member 222 has a through hole for the pulling wire 21 fixed to the slider 2212 to pass through.

[0042] For the pulling mechanism 2 of this embodiment, by providing a movable pulling member 221, the length of the pulling wire 21 inside the patient can be controlled outside the patient's body, so as to control the extending length of the baffle body 1; through the locking effect between the locking blocks 22112 and the multiple locking grooves 2222, the baffle body 1 can be locked at an appropriate position in the axial direction of the front end, without the need to fix it with the hand; by providing the second spring 2213, pressing the locking block 2211 with one hand can release the lock, which is convenient for performing external control on the baffle body 1.

[0043] Optionally, the pulling member 221 can also be a rotatable knob. One end of the pulling wire 21 is fixed to the outer periphery of the knob. Thus, when the knob is rotated, the pulling wire 21 can be wound around the outer periphery of the knob, thereby pulling the baffle body 1. Correspondingly, a locking structure for locking the knob at different positions is provided on the pulling member 221 and the locking member 222.

[0044] As Figure 1 and Figure 5 shown, further, the limiting member 3 is fixed on the fibroscope. Optionally, the limiting member 3 is detachably connected to the fibroscope. The limiting member 3 sequentially includes a first limiting portion 31, a second limiting portion 32, and a third limiting portion 33 along the axial direction of the fibroscope, and can limit the positions between the baffle body 1, the pulling wire 21, and the first spring 4 and the fibroscope.

[0045] As Figure 5As shown in the figure, specifically, the first limiting part 31 is sleeved on the outer periphery of the distal end of the fiber optic endoscope, and is used to limit the circumferential position and radial position of the baffle body 1. The first limiting part 31 includes a limiting shell 311 and an elastic band 312. The limiting shell 311 is an arc-shaped cylindrical shell, and the inner arc surface of the cylindrical shell matches the outer arc surface of the baffle body 1. The two side edges of the cylindrical shell protrude towards the axis direction, so as to form a limiting groove capable of limiting the circumferential position of the baffle body 1. The two ends of the elastic band 312 are respectively fixedly connected to the two side edges of the limiting shell 311, so that the first limiting part 31 forms an elastic cylindrical surface, which can be firmly sleeved on the outer periphery of the distal end of the fiber optic endoscope, and a limiting space is formed between the limiting shell 311 and the distal end, which can limit the radial position and circumferential position of the baffle body 1 at the same time, so that the baffle body 1 can only move along the axis direction, achieving the effect of smoothly extending or retracting linearly on the outer periphery of the distal end of the fiber optic endoscope. The first limiting part 31 wraps the baffle body 1, and can also play a role in protecting the tissues in the spinal canal.

[0046] The second limiting part 32 is an arc-shaped convex ring located at one end of the limiting groove. The arc-shaped inner wall of the second limiting part 32 matches the outer surface of the distal end of the fiber optic endoscope. The second limiting part 32 includes a limiting surface, and the limiting surface is arranged parallel and opposite to the end surface of the pulling end 11. The two ends of the first spring 4 are fixed between the end surface of the pulling end 11 and the limiting surface. At the same time, since the limiting shell 311 and the distal end limit the radial position of the first spring 4, the first spring 4 can only expand and contract along the axis of the fiber optic endoscope, so as to ensure that the first spring 4 only applies a force to the baffle body 1 in the axis direction. In addition, a pulling through hole is correspondingly formed on the second limiting part 32. The pulling through hole is perpendicular to the limiting surface and penetrates through the second limiting part 32, so that the pulling wire 21 fixed on the pulling end 11 can pass through the second limiting part 32 and is limited on the outer periphery of the fiber optic endoscope by the pulling through hole.

[0047] The third limiting part 33 is used to limit the position of the wire drawing 21. The third limiting part 33 includes a snap ring 331, and a through wire drawing limiting channel 332 is provided on the inner wall of the snap ring 331. The snap ring 331 can be firmly sleeved on the outer periphery of the fiber endoscope body, so that the wire drawing 21 between the second limiting part 32 and the pulling assembly 22 is fixed in the wire drawing limiting channel 332, keeps parallel to the axis of the fiber endoscope, does not twist and does not separate from the fiber endoscope body. According to the length of the fiber endoscope inserted into the body, a plurality of snap rings 331 can be arranged to ensure the full-length fitting of the wire drawing 21 and the fiber endoscope body. Optionally, a limiting strip 333 can also be arranged between the plurality of snap rings 331, and the limiting strip 333 is made of a bendable material so as to be able to bend synchronously with the fiber endoscope. The wire drawing limiting channel 332 penetrates through the limiting strip 333 and the plurality of snap rings 331, so that the wire drawing 21 between the second limiting part 32 and the pulling assembly 22 is all limited in the third limiting part 33 to further ensure that there is no twisting or separation from the fiber endoscope body.

[0048] When using the nerve baffle device of this embodiment, first, tightly sleeve the first limiting part 31 on the outer periphery of the tip of the fiber endoscope, and ensure that the nerve baffle device and the tip of the fiber endoscope are aligned. Then straighten the third limiting part 33 and tightly fasten the plurality of snap rings 331 on the body of the fiber endoscope. Since in the initial state of the nerve baffle device, the clamping block 22112 of the pulling assembly 22 is stuck in the outermost locking groove 2222, at this time, due to the pulling effect of the wire drawing 21 on the baffle body 1, the baffle body 1 is completely located in the limiting groove. Therefore, the baffle body 1 and the second limiting part 32 jointly squeeze the first spring 4 from both ends of the first spring 4, and the first spring 4 is in a compressed state.

[0049] During the operation, when the tip of the fiber endoscope reaches the optimal position and the baffle body 1 needs to be extended, press the pressing part 22111 outside the patient's body to unlock the pulling part 221 and slowly slide the pulling part 221 in the direction of the baffle body 1, so that the pulling force of the other end of the wire drawing 21 on the baffle body 1 is reduced. When the pushing force of the first spring 4 in the compressed state on the baffle body 1 is greater than the pulling force of the wire drawing 21 on the baffle body 1, the baffle body 1 will extend out of the limiting groove and be exposed in front of the tip of the fiber endoscope. When it is confirmed that the exposed length of the baffle body 1 meets the condition of blocking the nerve, release the pressing part 22111 and lock the clamping block 22112 in the nearest locking groove 2222, so as to lock the position of the baffle body 1, and then subsequent spinal canal surgeries such as ablation can be carried out.

[0050] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A nerve baffle device for intraspinal fiberscope surgery, characterized in that: It comprises a baffle body (1), a pulling mechanism (2), a limiting component (3) and a first spring (4); The baffle body (1) comprises a pulling end (11) and a protruding end (12), and the two ends of the first spring (4) are respectively connected to the pulling end (11) and the limiting component (3); The pulling mechanism (2) comprises a pulling wire (21) and a pulling assembly (22), wherein two ends of the pulling wire (21) are fixedly connected to the pulling end (11) and the pulling assembly (22) respectively, and the baffle body (1) can be extended or retracted in the limiting component (3) by operating the pulling assembly (22); The limiting component (3) is located on the periphery of the baffle body (1), the first spring (4) and the pulling wire (21), and the limiting component (3) is detachably connected to the fiberscope.

2. The nerve baffle device for intraspinal fiberscope surgery according to claim 1, characterized in that: The limiting component (3) comprises a first limiting portion (31), the first limiting portion (31) comprises a first limiting surface (321), the first limiting surface (321) is parallel to the end surface of the pulling end (11), and the first spring (4) is located between the pulling end (11) and the first limiting surface (321).

3. The nerve baffle device for intraspinal fiberscope surgery according to claim 2, characterized in that: The first limiting portion (31) comprises a pulling through hole (322), and the pulling through hole (322) is perpendicular to the first limiting surface (321) and passes through the first limiting portion (31).

4. The nerve baffle device for intraspinal fiberscope surgery according to claim 3, characterized in that: The pulling assembly (22) comprises a pulling member (221) and a locking member (222); the pulling member (221) is connected to one end of the pulling wire (21); the pulling member (221) is a movable member; and the locking member (222) can fix the position of the pulling member (221).

5. The nerve baffle device for intraspinal fiberscope surgery according to claim 4, characterized in that: The pulling member (221) is a sliding member, and the pulling member (221) can slide on the locking member (222) along the direction of the pulling wire (21).

6. The nerve baffle device for intraspinal fiberscope surgery according to claim 4, characterized in that: The pulling member (221) is a rotating member, and one end of the pulling wire (21) is fixed to the outer periphery of the pulling member (221).

7. The nerve baffle device for intraspinal fiberscope surgery according to claim 5, characterized in that: The pulling member (221) comprises a locking block (2211), and the locking member (222) comprises a locking groove (2222), and a plurality of the locking grooves (2222) are arranged along the direction of the pulling wire (21).

8. The nerve baffle device for intraspinal fiberscope surgery according to claim 7, characterized in that: The pulling member (221) further comprises a slider (2212) and a second spring (2213); a groove (22121) is provided on one side of the slider (2212); the second spring (2213) is located in the groove (22121); and one end of the locking block (2211) is inserted into the groove (22121).

9. The nerve baffle device for intraspinal fiberscope surgery according to claim 4, characterized in that: The limiting component (3) further comprises a second limiting portion (32), the second limiting portion (32) comprising a limiting shell (311) and an elastic band (312), the limiting shell (311) being a concave plate, the baffle body (1) being located in the concave space of the limiting shell (311), and the two ends of the elastic band (312) being fixedly connected to the two sides of the limiting shell (311).

10. The nerve baffle device for intraspinal fiberscope surgery according to claim 9, characterized in that: The limiting component (3) further comprises a third limiting portion (33), wherein the third limiting portion (33) comprises a clamping ring (331), and an inner wall of the clamping ring (331) is provided with a through-going limiting channel for the pulling wire (21).

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