CN220632295U - Visual interbody fusion cage of backbone scope - Google Patents

Abstract

The utility model discloses a visual interbody fusion cage of a spinal endoscope, which belongs to the technical field of medical appliances and comprises a fusion cage mounting mechanism and a component connection adjusting mechanism, wherein the outer side of a guide sliding rod is also in sliding clamping connection with a lower limb, the outer sides of an upper limb and the lower limb are both provided with positioning clamping grooves, the end part of a screw sleeve is hinged with a connecting arm rod, and the tail end of the connecting arm rod is connected with a locking piece. This application will generally fuse the ware and cut apart into upper limbs and lower limbs, before using, can be fixed in the location draw-in groove with cubic plug-in components, and doctor accessible rotation crank drive positive and negative screw thread lead screw rotates, the swivel nut on both sides can drive connecting arm pole and locking piece and keep away from each other or be close to this moment to change the distance between upper limbs and the lower limbs, thereby realized interbody fusion cage altitude mixture control, make interbody fusion cage altitude mixture control be applicable to the space height between the adjacent vertebra piece, thereby ensured with the fixed connection between the adjacent vertebra piece, can satisfy the needs of different centrum clearances, the practicality is higher.

Description

Visual interbody fusion cage of backbone scope

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a visual interbody fusion cage of a spinal endoscope.

Background

Scoliosis, degenerative disc disease, herniated disc, osteoporosis, spondylolisthesis, etc. of the spine occur in the human body, and these lesions can lead to spinal deformity, pain, nerve damage, and loss of some or all of the mobility. The treatment means for the spinal lesions comprise non-surgical treatment means such as medicines, rehabilitation training, exercise and the like, and surgical treatment means. Among them, spinal fusion is a common surgical treatment. When the intervertebral disc of the vertebra is diseased or necrotized, the vertebral fusion operation is needed, and the traditional operation scheme is as follows: the diseased disc is removed and an intervertebral cage conforming to the shape of the disc is then placed in the removed disc site. The traditional anchoring type interbody fusion cage is generally of a fixed integrated structure, cannot be adjusted, and therefore cannot be adjusted according to the height of a gap between adjacent vertebral blocks, when the heights of the gaps between the adjacent vertebral blocks are different, interbody fusion cage with different heights needs to be selected, the practicability is low, the interbody fusion cage is invisible, nerves or blood vessels around the spine are often touched in the implantation process of the interbody fusion cage, and in addition, the interbody fusion cage cannot be spread, so that the interbody fusion cage can easily withdraw from a human body, and damage is caused to the body of a patient.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

Accordingly, the present utility model is directed to providing an endoscopic spinal interbody cage that solves the problem of the inability of conventional interbody cages to adjust to the height of the space between adjacent spinal blocks. In order to solve the technical problems, the utility model provides a visual interbody fusion cage for a spinal endoscope, which adopts the following technical scheme: an intervertebral fusion device visualized by a spinal endoscope, which comprises,

the fusion device mounting mechanism comprises an upper limb and a guide sliding rod arranged at the head of the upper limb, wherein the outer side of the guide sliding rod is also in sliding joint with a lower limb, and positioning clamping grooves are formed in the outer sides of the upper limb and the lower limb;

the component connection adjusting mechanism is detachably connected with the fusion device mounting mechanism and comprises a block-shaped plug-in component and a positive and negative threaded screw rod which is rotationally arranged in the block-shaped plug-in component, the outer side of the positive and negative threaded screw rod is connected with a threaded sleeve which is arranged oppositely through threaded sliding, the end part of the threaded sleeve is hinged with a connecting arm rod, the tail end of the connecting arm rod is connected with a locking piece, one end of the positive and negative threaded screw rod is fixedly connected with a crank, and the crank is positioned on the outer side of the block-shaped plug-in component.

Through adopting above-mentioned technical scheme, before using, can be fixed in the location draw-in groove with cubic plug-in components, and doctor accessible rotation crank drive positive and negative screw thread lead screw rotates, and the swivel nut on both sides can drive connecting arm pole and locking piece and keep away from each other or be close to this to change the distance between upper limbs and the lower limbs.

Optionally, the inner wall of location draw-in groove has all seted up the locating hole from top to bottom, the tip of locking piece extends to the outside of cubic plug-in components and with the locating hole grafting cooperation.

By adopting the technical scheme, before use, the block-shaped plug-in components can be blocked into the positioning clamping groove, and the end parts of the locking pieces are inserted into the positioning holes, so that the fixing work of the locking pieces on two sides, an upper limb and a lower limb is completed.

Optionally, the surface threads of the front and back threaded screw rod are divided into two parts, the spiral directions are opposite, and the two screw sleeves are respectively positioned at two sides of the front and back threaded screw rod, and the movement directions are opposite.

By adopting the technical scheme, the two screw sleeves can move reversely at the front end and the back end of the front and back threaded screw rod due to the opposite spiral directions of the two parts when the front and back threaded screw rod rotates.

Optionally, the outside of locking piece articulates there is the connecting rod, the one end that the locking piece was kept away from to the connecting rod articulates there is the footstock, the afterbody fixedly connected with movable rod of footstock, and the inside of cubic plug-in components has set firmly hollow cylinder, fixedly connected with spring between hollow cylinder and the footstock, the tip of movable rod stretches into the inside of hollow cylinder.

Through adopting above-mentioned technical scheme, when sliding card goes into the cubic plug-in components to the location draw-in groove, the locking piece on both sides can utilize the connecting rod to push forward movable jack-up dish, and the spring can be compressed this moment, and after the locking piece moved to the locating hole position, the spring was restored to original state, and the locking piece can be by firm inserting in the locating hole this moment.

Optionally, the head end and the tail end of the fusion device installation mechanism along the length direction are both open, and the side walls of the upper limb and the lower limb are both provided with windows communicated with the inner cavities of the upper limb and the lower limb.

Through adopting above-mentioned technical scheme, backbone scope can be through the inside condition of window observation fusion ware.

Optionally, the upper surface of the upper limb and the lower surface of the lower limb are both provided with inverted teeth, and the inverted teeth adopt a triangular cone shape.

By adopting the technical scheme, the inverted tooth can tightly clamp the vertebral body after the fusion cage is implanted into the intervertebral space of the human body to prop open, so that the intervertebral fusion cage is prevented from retreating to the greatest extent and injuring the body of a patient.

Optionally, the upper surface of the upper limb and the lower surface of the lower limb are both provided with bone grafting windows, and the inner sides of the bone grafting windows are provided with transverse developing needles.

By adopting the technical scheme, the fusion cage can be accurately implanted into a preset position in a human body under the observation of the spinal endoscope and the bone grafting window.

Optionally, the afterbody fixedly connected with hollow bolt of cubic plug-in components, hollow bolt adopts the open tubular structure in both ends, and has seted up the bone grafting hole on the lateral wall of hollow bolt, bone grafting hole and bone grafting window link up.

Through adopting above-mentioned technical scheme, backbone scope can be through the inside condition of window observation fusion ware body to avoid tissue blood vessel and nerve effectively, under backbone scope's observation, can accurately implant the preset position in the human body with the fusion ware now, then the filling material such as hollow bolt filling skeleton, tissue, cell, medicament, skeleton and filling material are through planting bone hole and planting bone window interactive growth, realize the interbody fusion better, avoid filling earlier and then implant fusion ware and the loose problem of fusion failure of filling material that leads to as far as possible.

In summary, the present utility model includes at least one of the following beneficial effects:

1. the general fusion cage is divided into the upper limb and the lower limb, the upper limb and the lower limb are connected through the guide sliding rod, before the fusion cage is used, the block-shaped plug-in unit can be fixed in the positioning clamping groove, a doctor can drive the front and back threaded screw rod to rotate through the rotary crank, at the moment, the threaded sleeves on two sides can drive the connecting arm rod and the locking piece to be far away or close to each other, so that the distance between the upper limb and the lower limb is changed, the height adjustment of the fusion cage is realized, the height of the fusion cage is suitable for the height of a gap between adjacent vertebral blocks, the fixed connection between the fusion cage and the adjacent vertebral blocks is ensured, the requirements of different vertebral body gaps can be met, and the fusion cage is high in practicability;

2. when the block-shaped plug-in components are blocked into the locating clamping groove in a sliding way, the locking pieces at two sides can utilize the connecting rod to push the top plate forwards, the spring can be compressed at the moment, after the locking pieces move to the locating hole, the spring is restored to the original state, and at the moment, the locking pieces can be stably inserted into the locating hole;

3. the condition inside the fusion device body can be observed through the window to the backbone scope, thereby avoid tissue blood vessel and nerve effectively, under the observation of backbone scope, can accurately implant the preset position in the human body with the fusion device now, then fill the filler such as skeleton, tissue, cell, medicament through hollow bolt, skeleton and filler are through planting bone hole and planting bone window interactive growth, realize the interbody fusion better, avoid filling earlier and implant the problem that the filler that leads to of fusion device after implantation is loose, fusion failure as far as possible.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of the overall utility model;

FIG. 2 is a schematic side view of the internal cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of the upper and lower limb mounting aspects of the present utility model;

FIG. 4 is a schematic top view of the cage mounting mechanism of the present utility model;

fig. 5 is an enlarged schematic view of fig. 2 a according to the present utility model.

Reference numerals illustrate: 100. a fusion cage mounting mechanism; 101. an upper limb; 102. a guide slide bar; 103. a lower limb; 104. positioning clamping grooves; 105. positioning holes; 106. a window; 107. chamfering; 108. bone grafting window; 109. a lateral developing needle; 200. the component is connected with the adjusting mechanism; 201. a block insert; 202. a front and back threaded screw rod; 203. a screw sleeve; 204. a crank; 205. a connecting arm; 206. a locking member; 207. a connecting rod; 208. a top plate; 209. a moving rod; 210. a hollow cylinder; 211. a spring; 212. a hollow bolt; 213. bone grafting holes.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

Example 1, referring to fig. 1-3, the present utility model discloses an endoscopic spinal visualization cage that solves the problem that a conventional cage cannot be adjusted according to the height of a gap between adjacent vertebral blocks, including,

the fusion device mounting mechanism 100 comprises an upper limb 101 and a guide slide bar 102 arranged at the head of the upper limb 101, wherein the outer side of the guide slide bar 102 is also in sliding clamping connection with a lower limb 103, and the outer sides of the upper limb 101 and the lower limb 103 are provided with positioning clamping grooves 104;

the component connection adjusting mechanism 200 is detachably connected with the fusion cage mounting mechanism 100 and comprises a block plug-in 201 and a front and back threaded screw rod 202 rotatably arranged in the block plug-in 201, a threaded sleeve 203 which is arranged oppositely is connected to the outer side of the front and back threaded screw rod 202 in a sliding manner through threads, a connecting arm rod 205 is hinged to the end portion of the threaded sleeve 203, a locking piece 206 is connected to the tail end of the connecting arm rod 205, a crank 204 is fixedly connected to one end of the front and back threaded screw rod 202, and the crank 204 is located on the outer side of the block plug-in 201.

Specifically, the inner walls of the positioning clamping groove 104 are provided with positioning holes 105 up and down, the end parts of the locking pieces 206 extend to the outer sides of the block-shaped plug-in units 201 and are in plug-in fit with the positioning holes 105, before the use, the block-shaped plug-in units 201 can be clamped into the positioning clamping groove 104, and the end parts of the locking pieces 206 are inserted into the positioning holes 105, so that the fixing work of the locking pieces 206 on two sides with the upper limb 101 and the lower limb 103 is completed.

Further, the surface threads of the front and back threaded screw rod 202 are divided into two parts, the screw directions are opposite, the two threaded sleeves 203 are respectively positioned at two sides of the front and back threaded screw rod 202, and the movement directions are opposite, when the front and back threaded screw rod 202 rotates, the two threaded sleeves 203 can move reversely at the front and back ends of the front and back threaded screw rod 202 due to the opposite screw directions of the two parts.

Wherein, all be provided with pawl 107 on the upper surface of upper limbs 101 and the lower surface of lower limbs 103, pawl 107 adopts the triangle toper, and pawl 107 can make the fusion cage closely block the centrum after implanting human intervertebral space and prop up, avoids the intervertebral fusion cage to retreat as far as possible and causes the injury to patient's health.

To sum up, this application will generally fuse the ware and cut apart into upper limbs 101 and lower limbs 103, and link to each other through direction slide bar 102 between the two, before using, can be fixed in the location draw-in groove 104 with cubic plug-in components 201, and doctor's accessible rotation crank 204 drive positive and negative screw lead screw 202, the swivel nut 203 on both sides can drive connecting arm 205 and locking piece 206 and keep away from each other or be close to this, thereby change the distance between upper limbs 101 and lower limbs 103, thereby realized interbody fusion cage height adjustment, make interbody fusion cage height be applicable to the space height between the adjacent vertebra piece, thereby ensured with adjacent vertebra piece between fixed connection, can satisfy different centrum clearance's needs, the practicality is higher.

In embodiment 2, referring to fig. 5, in order to achieve the insertion and fixation of the locking member 206 and the positioning hole 105 in this embodiment, based on the same concept as that of the first embodiment, the visual interbody fusion cage for spinal endoscope further includes a connecting rod 207 hinged to the outer side of the locking member 206, one end of the connecting rod 207 away from the locking member 206 is hinged to a top plate 208, a movable rod 209 is fixedly connected to the tail of the top plate 208, a hollow cylinder 210 is fixedly arranged in the block insert 201, a spring 211 is fixedly connected between the hollow cylinder 210 and the top plate 208, and an end of the movable rod 209 extends into the hollow cylinder 210.

To sum up, when the block insert 201 is slidably inserted into the positioning slot 104, the locking members 206 on both sides can push the top plate 208 forward by using the connecting rod 207, the spring 211 can be compressed at this time, and after the locking member 206 moves to the position of the positioning hole 105, the spring 211 is restored, at this time, the locking member 206 can be stably inserted into the positioning hole 105.

Embodiment 3 referring to fig. 2 and 4, in this embodiment, in order to realize the observation of the internal condition of the cage body, based on the same concept as the first embodiment, the spinal endoscope visualization interbody cage further includes a cage mounting mechanism 100 with both the head and tail ends thereof open along the length direction, and windows 106 communicating the inner cavities thereof are formed on the side walls of the upper limb 101 and the lower limb 103.

Specifically, the bone grafting window 108 is opened on the upper surface of the upper limb 101 and the lower surface of the lower limb 103, and the lateral developing needle 109 is arranged on the inner side of the bone grafting window 108, so that the fusion cage can be accurately implanted into the preset position in the human body under the observation of the spinal endoscope and the bone grafting window 108.

Further, the tail of the block insert 201 is fixedly connected with a hollow bolt 212, the hollow bolt 212 adopts a cylindrical structure with two open ends, and the side wall of the hollow bolt 212 is provided with a bone grafting hole 213, and the bone grafting hole 213 is communicated with the bone grafting window 108.

In conclusion, the condition inside the fusion device body can be observed through the window 106 by the spinal endoscope, so that tissue blood vessels and nerves can be effectively avoided, under the observation of the spinal endoscope, the fusion device can be accurately implanted into a preset position in a human body, then fillers such as bones, tissues, cells, medicaments and the like are filled through the hollow bolts 212, the bones and the fillers grow interactively through the bone grafting holes 213 and the bone grafting windows 108, the intervertebral fusion is better realized, and the problems of loosening and fusion failure of the fillers caused by implantation of the fusion device after filling are avoided as much as possible.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. Visual interbody fusion cage of backbone scope, its characterized in that: comprising the steps of (a) a step of,

the fusion device mounting mechanism (100) comprises an upper limb (101) and a guide sliding rod (102) arranged at the head of the upper limb (101), wherein the outer side of the guide sliding rod (102) is also in sliding clamping connection with a lower limb (103), and positioning clamping grooves (104) are formed in the outer sides of the upper limb (101) and the lower limb (103);

the component connection adjustment mechanism (200) is detachably connected with the fusion cage installation mechanism (100), the fusion cage installation mechanism comprises a block plug-in unit (201) and a forward and reverse threaded screw rod (202) which is arranged inside the block plug-in unit (201), a threaded sleeve (203) which is arranged oppositely is connected to the outer side of the forward and reverse threaded screw rod (202) in a sliding manner through threads, a connecting arm rod (205) is hinged to the end portion of the threaded sleeve (203), a locking piece (206) is connected to the tail end of the connecting arm rod (205), a crank (204) is fixedly connected to one end of the forward and reverse threaded screw rod (202), and the crank (204) is located on the outer side of the block plug-in unit (201).

2. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the inner wall of the positioning clamping groove (104) is provided with positioning holes (105) up and down, and the end part of the locking piece (206) extends to the outer side of the block-shaped plug-in unit (201) and is in plug-in fit with the positioning holes (105).

3. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the surface threads of the front and back threaded screw rod (202) are divided into two parts, the spiral directions are opposite, and the two threaded sleeves (203) are respectively positioned at two sides of the front and back threaded screw rod (202) and have opposite movement directions.

4. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the outside of locking piece (206) articulates there is connecting rod (207), the one end that locking piece (206) was kept away from to connecting rod (207) articulates there is footstock (208), the afterbody fixedly connected with movable rod (209) of footstock (208), and the inside of cubic plug-in components (201) has set firmly hollow section of thick bamboo (210), fixedly connected with spring (211) between hollow section of thick bamboo (210) and footstock (208), the tip of movable rod (209) stretches into the inside of hollow section of thick bamboo (210).

5. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the head end and the tail end of the fusion device mounting mechanism (100) along the length direction are both open, and the side walls of the upper limb (101) and the lower limb (103) are both provided with windows (106) communicated with the inner cavities of the upper limb and the lower limb.

6. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the upper surface of the upper limb (101) and the lower surface of the lower limb (103) are both provided with inverted teeth (107), and the inverted teeth (107) are triangular conical.

7. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: bone grafting window (108) are all seted up on upper surface of upper limbs (101) and the lower surface of lower limbs (103), and the inboard of bone grafting window (108) is provided with horizontal development needle (109).

8. The spinal endoscopic visualization interbody fusion cage according to claim 1, wherein: the tail of the block-shaped plug-in unit (201) is fixedly connected with a hollow bolt (212), the hollow bolt (212) adopts a cylindrical structure with two open ends, a bone grafting hole (213) is formed in the side wall of the hollow bolt (212), and the bone grafting hole (213) is communicated with the bone grafting window (108).