CN217772394U - Step-by-step expansion sleeve assembly for spinal minimally invasive surgery - Google Patents

Abstract

The utility model relates to a medical auxiliary instrument technical field, more specifically relates to a backbone minimal access surgery is with expanding sleeve subassembly step by step. The utility model provides a backbone minimal access surgery is with expanding thimble assembly step by step, is including first location expansion pipe fitting and the second location expansion pipe fitting that is equipped with hollow structure, second location expansion pipe fitting cover is located on the first location expansion pipe fitting, the top of first location expansion pipe fitting is equipped with joint spare, joint spare with first location expansion pipe fitting swing joint, be equipped with on the second location expansion pipe fitting with the corresponding draw-in groove of buckle, joint spare with draw-in groove looks joint. The utility model discloses simple structure through rotating joint spare and draw-in groove looks joint, whole plug process only needs one-hand operation, and is simple swift, makes things convenient for inserting and extracting of first location expansion pipe fitting.

Description

Step-by-step expansion sleeve assembly for spinal minimally invasive surgery

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, more specifically relates to a backbone minimal access surgery is with expanding sleeve pipe assembly step by step.

Background

When treating lumbar, thoracic and cervical disc herniation symptoms, the establishment of minimally invasive surgical channels is very important, and in order to make the working channel safely reach the affected part, the channels need to be created in a step-by-step enlarging manner. The traditional gradual expansion casing fixing mode is mostly manually held, and the casing is fixed with the casing by a buckle device. The buckling device is very inconvenient to insert and pull out, and can be operated by two hands, so that the positioning sleeve needs to be fixed by the other medical worker by hands, and great inconvenience is brought to minimally invasive channel surgery. In addition, the existing medical minimally invasive surgery channel expansion sleeve assembly also has the problems of various specifications, insufficient portability, insufficient stability and the like.

The prior art discloses an internal expanding sleeve which mainly comprises an inner sleeve, an outer sleeve and a power-assisted screw cap, wherein both the inner sleeve and the outer sleeve are provided with a pipe head end and a pipe tail end; the inner sleeve is hollow, the tube head end of the inner sleeve is of an outwards-expanded bell mouth structure, the outer wall of the tube tail end of the inner sleeve is provided with an external thread, and the power-assisted screw cap is provided with an internal thread matched with the external thread; the outer sleeve is hollow inside and sleeved outside the inner sleeve, the outer sleeve is provided with side holes, longitudinal notches are formed in the outer sleeve in an extending mode along the side holes towards the end of the tube head of the outer sleeve, expansion blades are formed on the tube wall between every two adjacent longitudinal notches, and the inner sleeve is driven to move through the rotary power-assisted screw cap to enable the expansion blades to radially expand or close. According to the technical scheme, in the operation process of the endoscope, soft tissues around an operation space are expanded from the inside of a body by using the internal expansion sleeve on the premise of not expanding a skin incision, so that the operation visual field of the endoscope can be expanded, and the shielding under a soft tissue mirror is reduced. In the disclosed technical scheme, the outer sleeve is in threaded connection with the inner sleeve, when the outer sleeve is in threaded connection with the inner sleeve, medical workers need to hold the inner sleeve to enable the outer sleeve to be in threaded connection with the inner sleeve, and the connection mode still brings great inconvenience to minimally invasive channel surgery in certain surgery.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an among the above-mentioned prior art of overcoming, need medical staff to hold up interior sleeve pipe and just can make outer tube and interior sleeve pipe be connected, provide a backbone minimal access surgery is with expanding sleeve pipe subassembly step by step.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a backbone minimal access surgery is with expanding thimble assembly step by step, is including the first location expansion pipe fitting and the second location expansion pipe fitting that are equipped with hollow structure, second location expansion pipe fitting cover is located on the first location expansion pipe fitting, the top of first location expansion pipe fitting is equipped with joint spare, joint spare with first location expansion pipe fitting swing joint, be equipped with on the second location expansion pipe fitting with the corresponding draw-in groove of joint spare, joint spare with draw-in groove looks joint.

In this technical scheme, after the second location expansion pipe fitting inserted through patient's skin incision, when first location expansion pipe fitting emboliaed in the second location expansion pipe, medical staff held first location expansion pipe fitting through one hand, stirred joint spare through the finger on this hand simultaneously, made joint spare joint in the draw-in groove, and simultaneously, the hollow knot of first location expansion pipe fitting founds the passageway of founding leading to the affected part, and medical staff can reach the affected part through this passageway through medical instrument or other pipe fittings. This technical scheme simple structure, through rotating joint spare and draw-in groove looks joint, whole plug process only needs one-hand operation, and is simple swift, makes things convenient for the first location to expand the inserting and extracting of pipe fitting.

Preferably, the joint spare includes buckle, link and is used for injecing the elastic component of buckle roll-off from the draw-in groove, the one end of link with first location expansion pipe fitting is articulated mutually, the buckle is located the link with first location expansion pipe fitting is articulated one end mutually, the elastic component is located the link is kept away from the one end of buckle. In this technical scheme, be provided with the round pin axle on the first location expansion pipe fitting, the link is installed and is connected at round pin epaxial and with round pin axle rotation, the buckle is located the connecting plate and is towards one side of first location expansion pipe fitting bottom, the elastic component is located the connecting plate and is kept away from one side of first location expansion pipe fitting bottom, when first location expansion pipe fitting embolias the suitable position in the second location expansion pipe fitting, the elastic rotation link through the elastic component rotates, make the buckle joint in the draw-in groove, when extracting first location expansion pipe fitting, medical staff presses the one end that the connecting plate is equipped with the elastic component through the finger and makes the elastic component compression, link buckle roll-off draw-in groove simultaneously, and then make first location expansion pipe fitting extract second location expansion pipe fitting.

Preferably, the connecting frame is further provided with a first protrusion for rotating the connecting frame, and the first protrusion is located at one end, far away from the buckle, of the connecting frame. In this technical scheme, be equipped with anti-skidding structure on the first arch, can make things convenient for medical staff to press first arch like this, set up first arch simultaneously and make medical staff just can follow the slide-out in the draw-in groove with less strength through lever structure in the one end of keeping away from the buckle.

Preferably, the elastic member is a spring, a second protrusion for limiting the position of the spring is arranged on the connecting frame, and the spring is sleeved on the second protrusion. In this technical scheme, the second arch can be cylindrical structure, also can be square or other forms's structure, and the second arch can be fine plays spacing effect to the spring.

Preferably, first location expansion pipe fitting includes first location expansion pipe and first casing, first casing is located the top of first location expansion pipe and rather than can dismantle and be connected, joint spare is located on the first casing and rather than articulated mutually. In this technical scheme, first casing is the plastics material, first location expansion pipe is the metal material, be equipped with the through-hole on the first casing, first location expansion pipe is located the through-hole and bonds together through glue and first casing, the one end that first casing was kept away from to first location expansion pipe simultaneously is equipped with the wedge face structure, the setting of toper structure can make first location expansion pipe in the same direction as smooth reaming, set up first casing into the weight that the plastics material can save manufacturing cost and this device, make things convenient for medical staff's operation.

Preferably, the second location expansion pipe fitting includes the second location expansion pipe and locates the second casing of second location expansion pipe one end, the second location expansion pipe is kept away from the one end of second casing is equipped with the reaming toper structure of being convenient for, the draw-in groove is located on the second casing. In this technical scheme, the second casing is the plastics material, and second location expansion pipe is the metal material, is equipped with the through-hole on the second casing, and second location expansion pipe is arranged in the through-hole and bonds together through glue and second casing.

Preferably, the skin incision locating device further comprises a first expansion pipe provided with a hollow structure, one end of the first expansion pipe is provided with a conical structure used for being inserted into a skin incision, and the inner diameter of the first locating expansion pipe is larger than or equal to the outer diameter of the first expansion pipe. In the technical scheme, when a smaller channel is needed, medical staff insert the first expansion pipe into the wound through the skin of a patient, a hollow knot of the first expansion pipe establishes a channel which leads to the affected part, and when a larger channel is to be established, the first positioning expansion pipe is sleeved on the first expansion pipe and inserted into the skin of the patient.

Preferably, the tissue cutting device further comprises a circular cutting tube for cutting tissue, wherein the circular cutting tube is of a hollow structure, and the inner diameter of the circular cutting tube is larger than or equal to the outer diameter of the first expansion tube. In the technical scheme, one end, inserted into the skin, of the circular cutting tube is provided with the sawtooth structure, so that the circular cutting tube can conveniently cut off certain hard tissues, the other end of the circular cutting tube is provided with the handle, and the handle is arranged to be equivalent to a lever, so that medical staff can conveniently cut off the hard tissues by using the circular cutting tube.

Preferably, the medical positioning and expanding device further comprises a second expanding tube provided with a hollow structure, wherein the inner diameter of the second expanding tube is larger than or equal to the outer diameter of the first expanding tube, and the inner diameter of the second positioning expanding tube is larger than or equal to the outer diameter of the second expanding tube. In this embodiment, the second dilation tube together with the other tubular members forms a step-by-step reaming assembly.

Preferably, one end of the first expansion pipe and one end of the second expansion pipe, which are far away from the conical structure, are respectively provided with a first anti-slip structure and a second anti-slip structure. In this technical scheme, can increase the frictional force of palm and first expansion pipe and second expansion pipe like this, and then make things convenient for first expansion pipe and second expansion pipe to pull out and insert.

Compared with the prior art, the utility model discloses the beneficial effect who produces is:

the utility model discloses in, after the second location expansion pipe fitting inserted through patient's skin incision, when first location expansion pipe fitting emboliaed in the second location expansion pipe, medical staff held first location expansion pipe fitting through a hand, stirred joint spare through this finger on the hand simultaneously, made joint spare joint in the draw-in groove, and simultaneously, the cavity knot of first location expansion pipe fitting founds the passageway to the affected part of rising, and medical staff can reach the affected part through medical instrument or other pipe fittings via this passageway. The utility model discloses simple structure through rotating joint spare and draw-in groove looks joint, whole plug process only needs one-hand operation, and is simple swift, makes things convenient for the first location to expand inserting and extracting of pipe fitting.

Drawings

FIG. 1 is a schematic structural view of a first positioning expanding tube and a second positioning expanding tube in the step-by-step expanding cannula assembly for minimally invasive spinal surgery of the present invention;

FIG. 2 is an exploded view of a first positioning extension tube of the step-by-step extension sleeve assembly for minimally invasive spinal surgery of the present invention;

FIG. 3 is a schematic view of the first positioning and expanding tube of the progressive expanding sleeve assembly for minimally invasive spinal surgery of the present invention;

FIG. 4 is an exploded view of a second positioning dilation tube of the progressive dilation sleeve assembly of the present invention for minimally invasive spinal surgery;

FIG. 5 is a schematic view showing the connection relationship between the first positioning expanding tube and the second positioning expanding tube of the stepwise expanding cannula assembly for minimally invasive spinal surgery of the present invention;

FIG. 6 is a schematic structural view of the circular cutting tube of the step-by-step dilating cannula assembly for minimally invasive spinal surgery of the present invention;

fig. 7 is a schematic view of the whole structure of the stepwise expanding sleeve assembly for minimally invasive spinal surgery of the present invention.

In the drawings: 1. a first positioning expansion tube; 2. a second positioning expansion tube; 3. a clamping piece; 4. a card slot; 5. a first protrusion; 6. a second protrusion; 7. a first dilation tube; 8. a second dilation tube; 9. circularly cutting a pipe; 11. a first positioning expanding tube; 12. a first housing; 21. a second positioning dilation tube; 22. a second housing; 31. buckling; 32. a connecting frame; 33. an elastic member; 34. a pin shaft; 41. a first anti-skid structure; 42. a second anti-skid structure; 51. a handle; 52. and (3) a sawtooth structure.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

As shown in fig. 1 to 7, a spine minimal access surgery is with expanding thimble assembly step by step, including first location expansion pipe fitting 1 and the second location expansion pipe fitting 2 that is equipped with hollow structure, the second location expansion pipe fitting 2 cover is located on first location expansion pipe fitting 1, the top of first location expansion pipe fitting 1 is equipped with joint spare 3, joint spare 3 and first location expansion pipe fitting 1 swing joint, be equipped with the draw-in groove 4 corresponding with joint spare 3 on the second location expansion pipe fitting 2, joint spare 3 and draw-in groove 4 joint mutually. In this embodiment, after the second positioning expansion pipe fitting 2 is inserted through the skin incision of the patient, when the first positioning expansion pipe fitting 1 is sleeved in the second positioning expansion pipe fitting, the medical staff holds the first positioning expansion pipe fitting 1 with one hand, and simultaneously stirs the clamping piece 3 with the fingers on the hand, so that the clamping piece 3 is clamped in the clamping groove 4, meanwhile, the hollow knot of the first positioning expansion pipe fitting 1 establishes a passage which is communicated with the affected part, and the medical staff can reach the affected part through the passage by medical instruments or other pipe fittings. This embodiment simple structure, through rotating joint spare 3 and draw-in groove 4 looks joint, whole plug process only needs one-hand operation, and is simple swift, makes things convenient for the first location to expand inserting and extracting of pipe fitting 1.

Wherein, joint spare 3 includes buckle 31, link 32 and is arranged in injecing the elastic component 33 of buckle 31 follow draw-in groove 4 roll-off, and the one end and the first location of link 32 expand pipe fitting 1 and articulate mutually, and buckle 31 is located link 32 and the first location and is expanded pipe fitting 1 and articulate one end mutually, and elastic component 33 is located the one end that link 32 kept away from buckle 31. In this embodiment, be provided with round pin axle 34 on the first location expansion pipe fitting 1, link 32 is installed on round pin axle 34 and is connected with round pin axle 34 rotation, buckle 31 is located the connecting plate and is connected towards one side of first location expansion pipe fitting 1 bottom, elastic component 33 locates the connecting plate and keeps away from one side of first location expansion pipe fitting 1 bottom, when first location expansion pipe fitting 1 embolias the suitable position in second location expansion pipe fitting 2, the elastic rotation link 32 through elastic component 33 rotates, make buckle 31 joint in draw-in groove 4, when extracting first location expansion pipe fitting 1, medical staff presses the one end that the connecting plate is equipped with elastic component 33 through the finger and makes elastic component 33 compress, link 32 buckle 31 roll-off draw-in groove 4 simultaneously, and then make first location expansion pipe fitting 1 extract second location expansion pipe fitting.

In addition, the connecting frame 32 is further provided with a first protrusion 5 for rotating the connecting frame 32 away from the buckle 31, and the first protrusion 5 is located at one end of the connecting frame 32 away from the buckle 31. In this embodiment, the first protrusion 5 is provided with an anti-slip structure, so that the medical staff can conveniently press the first protrusion 5, and the lever structure is used to enable the medical staff to slide the buckle 31 out of the slot 4 with a small force when the first protrusion 5 is arranged at the end far away from the buckle 31.

Wherein, first location expansion pipe fitting 1 includes first location expansion pipe 11 and first casing 12, and first casing 12 is located the top of first location expansion pipe 11 and can be dismantled rather than being connected, and joint spare 3 is located on first casing 12 and is articulated rather than mutually. In this embodiment, first casing 12 is the plastics material, first location expansion pipe 11 is the metal material, be equipped with the through-hole on the first casing 12, first location expansion pipe 11 is arranged in the through-hole and bonds together through glue and first casing 12, the one end that first casing 12 was kept away from to first location expansion pipe 11 is equipped with the wedge face structure simultaneously, the setting of toper structure can make first location expansion pipe 11 in the same direction as smooth reaming, set up first casing 12 into the weight that the plastics material can save manufacturing cost and this device, make things convenient for medical staff's operation.

In addition, still include the first expansion pipe 7 that is equipped with hollow structure, the one end of first expansion pipe 7 is equipped with the toper structure that is used for inserting the skin incision, and the internal diameter of first location expansion pipe fitting 1 is more than or equal to the external diameter of first expansion pipe 7. In this embodiment, when a smaller passageway is required, the medical professional inserts the first dilation tube 7 through the patient's skin to the wound, the hollow node of the first dilation tube 7 creates a passageway that opens up to the wound, and when a larger passageway is to be created, the first positioning dilation tube 11 is inserted over the first dilation tube 7 and into the patient's skin.

Wherein, still include the ring cutting pipe 9 that is used for cutting the tissue, ring cutting pipe 9 is hollow structure, and the internal diameter of ring cutting pipe 9 is more than or equal to the external diameter of first expansion pipe 7. In this embodiment, the end of the circular cutting tube 9 for inserting into the skin is provided with a saw tooth structure 52, which facilitates the circular cutting tube 9 to cut off some hard tissues, and the other end of the circular cutting tube 9 is provided with a handle 51, the handle 51 is arranged as a lever, which facilitates the medical staff to cut off the hard tissues by using the circular cutting tube 9.

In addition, the device also comprises a second expansion pipe 8 with a hollow structure, wherein the inner diameter of the second expansion pipe 8 is larger than or equal to the outer diameter of the first expansion pipe 7, and the inner diameter of the second positioning expansion pipe 21 is larger than or equal to the outer diameter of the second expansion pipe 8. In this embodiment, the second dilation tube 8 forms a step-reaming assembly with other tubular members.

In addition, a first anti-slip structure 41 and a second anti-slip structure 42 are respectively arranged at one ends of the first expansion pipe 7 and the second expansion pipe 8 far away from the conical structure. In this embodiment, the friction between the palm and the first and second dilation tubes 7 and 8 can be increased, thereby facilitating the insertion and extraction of the first and second dilation tubes 7 and 8.

Example 2

In this embodiment, the elastic member 33 is a spring, the connecting frame 32 is provided with a second protrusion 6 for limiting the position of the spring, and the spring is sleeved on the second protrusion 6. In this embodiment, the second protrusion 6 may have a cylindrical structure, or may have a square or other structure, and the second protrusion 6 may well limit the spring.

Example 3

In this embodiment, the second positioning expansion pipe 2 includes a second positioning expansion pipe 21 and a second housing 22 disposed at one end of the second positioning expansion pipe 21, a tapered structure for facilitating reaming is disposed at one end of the second positioning expansion pipe 21 away from the second housing 22, and the locking groove 4 is disposed on the second housing 22. In this embodiment, the second housing 22 is made of plastic, the second positioning expanding tube 21 is made of metal, a through hole is formed in the second housing 22, and the second positioning expanding tube 21 is located in the through hole and is bonded to the second housing 22 through glue.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a backbone minimal access surgery is with expanding thimble assembly step by step which characterized in that: including first location expansion pipe fitting (1) and second location expansion pipe fitting (2) that are equipped with hollow structure, second location expansion pipe fitting (2) cover is located on first location expansion pipe fitting (1), the top of first location expansion pipe fitting (1) is equipped with joint spare (3), joint spare (3) with first location expansion pipe fitting (1) swing joint, be equipped with on second location expansion pipe fitting (2) with corresponding draw-in groove (4) of joint spare (3), joint spare (3) with draw-in groove (4) looks joint.

2. The progressive expansion sleeve assembly for minimally invasive spinal surgery of claim 1, wherein: joint spare (3) are including buckle (31), link (32) and are used for injecing buckle (31) are from elastic component (33) of roll-off in draw-in groove (4), the one end of link (32) with first location expansion pipe fitting (1) is articulated mutually, buckle (31) are located link (32) with first location expansion pipe fitting (1) articulates one end mutually, elastic component (33) are located link (32) are kept away from the one end of buckle (31).

3. The progressive dilation sleeve assembly for minimally invasive spinal surgery according to claim 2, wherein: the connecting frame (32) is further provided with a first protrusion (5) used for rotating the connecting frame (32), and the first protrusion (5) is located at one end, far away from the buckle (31), of the connecting frame (32).

4. The progressive expansion sleeve assembly for minimally invasive spinal surgery according to claim 2 or 3, wherein: the elastic piece (33) is a spring, a second protrusion (6) used for limiting the position of the spring is arranged on the connecting frame (32), and the spring is sleeved on the second protrusion (6).

5. A progressive expansion sleeve assembly for minimally invasive spinal surgery according to claim 1 or 2, wherein: first location expansion pipe fitting (1) is including first location expansion pipe (11) and first casing (12), first casing (12) are located the top of first location expansion pipe (11) and rather than can dismantle the connection, joint spare (3) are located on first casing (12) and rather than articulated mutually.

6. The progressive dilation sleeve assembly for minimally invasive spinal surgery according to claim 1, wherein: second location expansion pipe fitting (2) are including second location expansion pipe (21) and locate second casing (22) of second location expansion pipe (21) one end, second location expansion pipe (21) are kept away from the one end of second casing (22) is equipped with the reaming toper structure of being convenient for, draw-in groove (4) are located on second casing (22).

7. A progressive expansion sleeve assembly for minimally invasive spinal surgery according to claim 1 or 2, wherein: still including being equipped with hollow structure's first expansion pipe (7), the one end of first expansion pipe (7) is equipped with the toper structure that is used for inserting the skin incision, the internal diameter more than or equal to of first location expansion pipe fitting (1) the external diameter of first expansion pipe (7).

8. The progressive expansion sleeve assembly for minimally invasive spinal surgery of claim 7, wherein: the tissue cutting device is characterized by further comprising a circular cutting tube (9) used for cutting tissue, wherein the circular cutting tube (9) is of a hollow structure, and the inner diameter of the circular cutting tube (9) is larger than or equal to the outer diameter of the first expansion tube (7).

9. The progressive expansion sleeve assembly for minimally invasive spinal surgery of claim 7, wherein: the expansion joint is characterized by further comprising a second expansion pipe (8) with a hollow structure, wherein the inner diameter of the second expansion pipe (8) is larger than or equal to the outer diameter of the first expansion pipe (7), and the inner diameter of the second positioning expansion pipe (21) is larger than or equal to the outer diameter of the second expansion pipe (8).

10. The progressive dilation sleeve assembly for minimally invasive spinal surgery according to claim 9, wherein: one ends, far away from the conical structure, of the first expansion pipe (7) and the second expansion pipe (8) are respectively provided with a first anti-skidding structure (41) and a second anti-skidding structure (42).

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