CN115844601A - Double-cavity balloon catheter for nucleus pulposus repair - Google Patents
Double-cavity balloon catheter for nucleus pulposus repair Download PDFInfo
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- CN115844601A CN115844601A CN202310161089.9A CN202310161089A CN115844601A CN 115844601 A CN115844601 A CN 115844601A CN 202310161089 A CN202310161089 A CN 202310161089A CN 115844601 A CN115844601 A CN 115844601A
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Abstract
The invention relates to a double-cavity balloon catheter for nucleus pulposus repair, which is used for implanting an artificial spinal implant and comprises: the outer capsule body extends to one end to form an opening, and the artificial nucleus pulposus prosthesis is injected through the opening to fill the outer capsule body so as to form the spinal implant; the inner bag body is sleeved inside the outer bag body and is used for containing a contrast medium so as to position the embedding position of the outer bag body; a contrast agent infusion tube communicated with the inner capsule body and used for injecting contrast agent into the inner capsule body; the inner sleeve is communicated with the outer capsule body; the outer sleeve and the inner sleeve are both located at one end in the same direction and are a first end, the other end is a second end, the first end is used for fixing the outer balloon body, a first cavity is formed between the inner surface of the outer sleeve and the outer surface of the inner sleeve, an opening of the outer balloon body is located in the first cavity, and the outer sleeve and the inner sleeve extrude the opening of the outer balloon body towards the direction of the first cavity.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a double-cavity balloon catheter for nucleus pulposus repair.
Background
Degenerative diseases of spinal intervertebral discs are common diseases and frequently encountered diseases, and the main treatment modes comprise physical treatment and surgical treatment. The main operation modes of the operation treatment are spine fusion and non-fusion, the spine non-fusion can avoid the secondary degeneration of operation adjacent segments caused by the fusion, and keep the physiological function of the operation segments as much as possible, so the spinal fusion and non-fusion can be widely applied and has good development prospect. The existing spine non-fusion mainly comprises an elastic fixation technology, an artificial intervertebral disc replacement and an artificial nucleus replacement, wherein the artificial nucleus replacement has the advantages of maintaining the integrity of an annulus fibrosus, effectively maintaining the height of an intervertebral disc, recovering the basic motion function of the spine, reducing the possibility of degeneration of adjacent segments and the like, and is more suitable for patients with early and middle degeneration of the intervertebral disc. At present, the artificial nucleus pulposus replacement is in a development stage, and can be used for minimally invasive or open surgery to treat protrusion of intervertebral disc or lumbar intervertebral disc-derived lumbago.
Among the major complications of artificial nucleus prosthesis replacement are annulus fibrosis, which is prone to implant displacement, cartilage endplate abrasion, and implant subsidence. The probability of post-operative migration and bulging of the artificial nucleus pulposus is high, and it has been reported that the probability of successful implantation of an artificial nucleus pulposus prosthesis (Mn) is between 77% and 90%, and that in case of successful implantation, post-operative migration of the implant occurs with a probability of 26%.
Therefore, the problems to be solved by the current stage of artificial spinal implants are: cartilage end plate damage and prosthesis subsidence may result; the implant may become dislodged or squeezed out; intervertebral height is difficult to maintain for long periods; the spinal mobility of the post-operative implant segment is reduced and motion in all directions is limited.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the artificial spine implant at the present stage may cause damage to cartilage endplates and prosthesis subsidence; the implant may become dislodged or squeezed out; intervertebral height is difficult to maintain for long periods; the spinal mobility of the post-operative implant segment is reduced and motion in all directions is limited.
The invention relates to a double-cavity balloon catheter for nucleus pulposus repair, which is used for implanting an artificial spinal implant and comprises:
the outer capsule body extends to one end to form an opening, and the artificial nucleus pulposus prosthesis is injected through the opening to fill the outer capsule body so as to form the spinal implant;
the inner bag body is sleeved inside the outer bag body and is used for containing contrast medium so as to position the embedding position of the outer bag body;
a contrast agent infusion tube communicated with the inner capsule body and used for injecting contrast agent into the inner capsule body;
the inner sleeve is communicated with the outer capsule body; one end of the outer sleeve and the other end of the inner sleeve, which are both located in the same direction, is a first end, the other end of the outer sleeve and the other end of the inner sleeve are second ends, the first end is used for fixing the outer balloon, a first cavity is formed between the inner surface of the outer sleeve and the outer surface of the inner sleeve, an opening of the outer balloon is located in the first cavity, and the outer sleeve and the inner sleeve simultaneously press the opening of the outer balloon towards the direction of the first cavity, so that the opening of the outer balloon is fixed in the first cavity; releasing the compression of the opening releases the outer bladder.
In some embodiments of the present application, the inner cannula extends into the outer balloon such that the inner cannula is in communication with the outer balloon for injecting the artificial nucleus prosthesis into the outer balloon through the inner cannula.
Preferably, the artificial nucleus pulposus prosthesis is self-curing silica gel or hydrogel, and the artificial nucleus pulposus prosthesis is solidified and shaped after entering the outer capsule body to replace the function of the nucleus pulposus.
Preferably, the inner cannula is sleeved outside the contrast medium infusion tube, and the outer cannula is sleeved outside the inner cannula. The contrast agent enters the inner capsule body through the contrast agent infusion tube, the artificial nucleus pulposus prosthesis enters the outer capsule body through the inner sleeve, and the paths of the contrast agent and the artificial nucleus pulposus prosthesis are different, so that the problem that the artificial nucleus pulposus prosthesis is influenced by injecting inconsistent liquid into the outer capsule body or the inner capsule body and contrast agent residues is solved.
Preferably, a handle is arranged and sleeved at the second end of the outer sleeve for stabilizing the matching of the outer sleeve and the inner sleeve, and the handle is fixedly connected with the outer sleeve.
In some embodiments of the present application, the outer balloon has a cavity structure with an opening at one end, the outer balloon has a deformation force, and the outer balloon after being injected into the artificial nucleus pulposus prosthesis is inflated and deformed to fill the space of the original nucleus pulposus. The outer capsule body after being implanted into the human body can replace the function of nucleus pulposus.
Preferably, the outer bag body in the standby state is a flat bag-shaped structure; the outer balloon body in the filling state extends to one end to form an opening, the extending part is of a tubular structure, and the tubular structure is sleeved outside the inner sleeve and is located in the first cavity. In a use state, the tubular structure is positioned in the first cavity gap between the outer sleeve and the inner sleeve, the outer sleeve and the inner sleeve extrude the tubular structure at the same time, and the tubular structure is tightly extruded by the outer sleeve and the inner sleeve, so that the outer balloon body is clamped and fixed, and the outer balloon body can be released by releasing the extrusion of the outer sleeve and the inner sleeve on the tubular structure.
In some embodiments of the present application, a first clamping pipe is arranged at a first end of the outer sleeve, the first clamping pipe is integrally connected with the outer sleeve, an inner diameter of the first clamping pipe is smaller than an inner diameter of the outer sleeve, and the outer sleeve and the first clamping pipe are in transition connection through a transition pipe; the first end of the inner sleeve is provided with a second clamping pipe, the second clamping pipe is integrally connected with the inner sleeve, the inner diameter of the second clamping pipe is smaller than that of the inner sleeve, and the inner sleeve is in transition connection with the second clamping pipe through a second transition pipe; in a use state, the first transition pipe and the second transition pipe are staggered, so that the first clamping pipe and the inner sleeve pipe jointly extrude the opening of the outer bag body. The principle of fixing the opening of the outer balloon body is as follows: the first lacuna of opening that can hold outer utricule has between chucking pipe one and the interior sleeve pipe, misplaces with transition pipe two when transition pipe one for the position of chucking pipe one corresponds with interior sheathed tube first end, and chucking pipe one extrudees the opening jointly with interior sleeve pipe, thereby fixes outer utricule.
In some embodiments of the present application, the direction of movement towards the first end is defined as a first direction and the direction of movement towards the second end is defined as a second direction. This definition is for convenience of the following description only and is not limiting.
Preferably, the transition tube is moved in a second direction such that the opening of the outer balloon is squeezed; the transition tube moves in a first direction to release the compression of the opening of the outer bladder. The outer capsule body is fixed after being extruded, so that the outer capsule body is convenient for operators to hold; the outer balloon body can be released after the extrusion of the outer balloon body is released, so that the outer balloon body is implanted into the intervertebral disc to replace the function of nucleus pulposus. The principle of fixing the opening of the outer bag body is as follows: the first cavity gap of the opening capable of accommodating the outer capsule body is formed between the first clamping pipe and the inner sleeve pipe, and when the first transition pipe and the second transition pipe are staggered, the position of the first clamping pipe corresponds to the first end of the inner sleeve pipe, and the first clamping pipe and the inner sleeve pipe extrude the opening together, so that the outer capsule body is fixed.
Preferably, the section of the first transition pipe is an inclined surface inclined upwards from the first direction to the second direction, and the section of the second transition pipe is an inclined surface inclined upwards from the first direction to the second direction; the inner diameter of the outer sleeve pipe is reduced to the inner diameter of the first clamping pipe, so that the first clamping pipe and the inner sleeve pipe jointly squeeze the opening of the outer capsule body, the inner diameter of the inner sleeve pipe is reduced to the inner diameter of the second clamping pipe, the second clamping pipe extends into the opening of the outer capsule body, and the inner sleeve pipe is communicated with the outer capsule body.
In some embodiments of the present application, an injector is provided, and the injector is detachably and fixedly connected with the handle, so as to facilitate the operator to inject the artificial nucleus pulposus prosthesis into the outer capsule and the contrast agent into the inner capsule respectively.
Preferably, the injection part is of a multi-channel tubular structure, the injection part comprises pipelines respectively communicated with the inner sleeve and the contrast medium infusion tube, and the interior of the injection part is fixedly connected with the contrast medium infusion tube.
Preferably, the injector is a Y-tube comprising a first tube and a second tube, the first tube being in communication with the inner cannula such that the first tube is in communication with the outer balloon, the second tube being in communication with the contrast agent infusion tube such that the second tube is in communication with the inner balloon; in the using process, the artificial nucleus pulposus prosthesis is injected into the outer balloon body through the first pipeline and the inner sleeve, and the contrast agent is injected into the inner balloon body through the second pipeline and the contrast agent infusion tube. Because the inner bag body and the outer bag body need to be injected with different substances respectively, the inner bag body and the outer bag body need to be ensured not to be communicated with each other, and the first pipeline and the second pipeline realize the independence of the inner bag body and the outer bag body.
Preferably, one end of the second pipeline in the first direction is a first end, one end of the second pipeline in the second direction is a second end, the second end of the second pipeline is provided with a connecting piece, the connecting piece is detachably and fixedly connected with the second pipeline, and the connecting piece is used for connecting an injector to inject the contrast medium into the second pipeline.
Preferably, the connecting piece comprises a first connecting pipe extending into the second pipeline and a second connecting pipe communicated with the injector, the first connecting pipe is communicated with the second pipeline and is communicated with the second connecting pipe, and the first connecting pipe and the second connecting pipe are integrally formed. When the injection bag is used, the injector is communicated with the second connecting pipe, the contrast agent in the injector is injected into the second connecting pipe, and then the contrast agent sequentially flows through the first connecting pipe and the second connecting pipe and enters the inner bag body.
Preferably, the connecting piece further comprises a threaded pipe provided with an internal thread, the threaded pipe is sleeved on the outer side of the first connecting pipe and is integrally connected with the first connecting pipe, a cavity allowing the second pipeline to extend into is formed between the inner surface of the threaded pipe and the outer surface of the first connecting pipe, the second pipeline is provided with an external thread, and the first threaded pipe is in threaded connection with the second pipeline. When the connecting piece is used, the second end of the second pipeline is inserted into a cavity between the threaded pipe and the first connecting pipe, and the threaded pipe and the second pipeline are screwed tightly, so that the connecting piece is fastened on the second pipeline.
Preferably, a sealing cap is arranged and used for sealing the second connecting pipe, and the sealing cap is detachably and fixedly connected with the second connecting pipe. Under the standby state, install the closing cap on connecting pipe two, can seal connecting piece, second pipeline, play protection and dirt-proof effect.
Preferably, the sealing cap comprises a sealing pipe and a threaded cylinder, the sealing pipe extends into the second connecting pipe, the threaded cylinder is integrally connected with the sealing pipe, the second connecting pipe is provided with external threads, and the threaded cylinder is in threaded connection with the second connecting pipe. When the sealing cap is used, the sealing tube extends into the second connecting tube, so that the second connecting tube is sealed, and the sealing cap is fixed on the second connecting tube through the threaded cylinder.
Preferably, the first end of the second pipe is detachably and fixedly connected with the handle. The two parts are convenient to assemble and disassemble.
Preferably, the first end of the second pipeline is provided with external threads, the handle is provided with a pore passage allowing the first end to extend into, internal threads matched with the external threads of the first end are arranged in the pore passage, and the second pipeline is in threaded connection with the handle, so that the Y-shaped pipe can be detached from the handle.
In some embodiments of the present application, the inner balloon is hermetically connected to one end of the contrast medium infusion tube, the other end of the contrast medium infusion tube is communicated with the second connecting tube, and the contrast medium infusion tube in a use state penetrates through the inner sleeve and the second pipeline. When the artificial nucleus pulposus prosthesis is used, the injector containing the contrast agent is connected with the connecting pipe II, the contrast agent is injected into the connecting pipe II, and the contrast agent enters the inner capsule body through the connecting pipe II, the connecting pipe I and the contrast agent injection pipe, so that the positions of the inner capsule body and the outer capsule body are positioned, a doctor can conveniently make adjustment, and the optimal artificial nucleus pulposus prosthesis placing position is found.
Preferably, the length of the contrast medium infusion tube is greater than that of the inner sleeve, and the contrast medium infusion tube extends out of the second end of the inner sleeve; the length of the inner sleeve is greater than the length of the outer sleeve, and the inner sleeve extends from the second end of the outer sleeve.
Preferably, the contrast medium infusion tube is connected with the interior of the connecting piece through a sealing piece, so that no liquid leakage occurs between the contrast medium infusion tube and the connecting piece, and the leakage of the contrast medium is prevented.
Preferably, the sealing element is of a tubular structure, the sealing element is communicated with the first connecting pipe and the second connecting pipe, the contrast medium infusion pipe is bonded with the sealing element, and the sealing element is bonded with the inner wall of the connecting piece.
Preferably, the handle has a passage for allowing entry of the outer cannula, the passage communicating with the bore.
Preferably, the outer wall of the handle is provided with a grab hand convenient to grab, and the grab hand and the handle are integrally connected.
The use method of the invention comprises the following steps:
a preparation stage: sleeving the inner sleeve outside the contrast agent infusion tube, sleeving the opening of the outer bag body at the first end of the inner sleeve, sleeving the outer sleeve outside the inner sleeve from the second end of the inner sleeve, and moving the outer sleeve in the first direction to enable the outer sleeve and the inner sleeve to tightly squeeze the opening of the outer bag body, so that the outer bag body is fixed; then, sleeving the channel of the handle outside the outer sleeve from the second end, so that the handle and the outer sleeve are relatively fixed, and the outer sleeve can be driven to move through the handle; finally, the injection tube is connected to the handle.
The using process comprises the following steps: the outer capsule is placed in an intervertebral disc by holding the handle, the second pipeline of the injection tube is provided with a connecting piece, a contrast agent is injected into the second pipeline through the connecting piece, the contrast agent flows through the contrast agent infusion tube and enters the inner capsule, and rays cannot penetrate through the contrast agent; after the position is determined, the contrast agent in the inner capsule body is extracted through the second pipeline, the volume of the contrast agent is measured, the connecting piece is held and the contrast agent infusion tube and the inner capsule body are pulled out, the sealing cap is screwed to the second connecting tube, and then the artificial nucleus pulposus prosthesis with the volume equal to that of the contrast agent is injected through the first pipeline of the infusion tube, for example: self-curing silicone or hydrogel, allowing the outer capsule to fill to the appropriate degree. After the liquid silica gel or the hydrogel is filled, the outer capsule body can expand and deform to be full of the space of the original nucleus pulposus under the action of pressure, and the outer capsule body has enough deformation capacity to ensure that the outer capsule body is not damaged in the process.
Withdrawing the instrument: the injection tube is held, the thread between the injection tube and the handle is unscrewed, the injection tube is pulled towards the second direction, the clamping tube II of the inner sleeve moves to the position corresponding to the clamping tube I of the outer sleeve, and the outer capsule is released because the distance between the clamping tube I and the clamping tube II is larger and the opening of the outer capsule is released for extrusion.
Placing into the intervertebral disc; holding the infusion tube, and pulling the inner sleeve towards the second direction to withdraw the inner sleeve from the patient. Then the handle is held to retreat for a certain distance, and the handle is slightly rotated and then pushed forward, so that the tail of the injected liquid support can be cut off, the handle together with the outer sleeve is taken out, and the residual liquid support in the outer sleeve is simultaneously taken out and taken out of the outer sleeve, thereby completing the implantation.
The invention has the beneficial effects that:
(1) Minimally invasive implantation causes less damage to the annulus fibrosus and preserves the structure of the disc as much as possible.
(2) By injecting contrast agent into the inner balloon for localization, the exact implantation location and the amount of prosthesis required can be determined.
(3) The outer capsule body is fixed with the inner sleeve in an extruding way through the outer sleeve, and the extruding action can be quickly released, so that the outer capsule body is quickly released, and the operation of placing the outer capsule body into the operation can be efficiently completed.
(4) The artificial nucleus pulposus prosthesis with the self-curing silica gel or hydrogel is implanted, and the prosthesis is implanted through a cannula when the prosthesis is in a liquid state, so that the prosthesis is simple and easy to fill fully; can replace the function of nucleus pulposus after being cured, and is not easy to be separated out.
(5) The self-curing silica gel or hydrogel filled outer capsule body can be well adapted to the anatomical structure of the nucleus pulposus of a patient by injecting the self-curing silica gel or hydrogel, the function of the nucleus pulposus is replaced, the function of a diseased segment is kept, and the degeneration of the adjacent segment is avoided.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present disclosure, but not to limit the present disclosure, and that other drawings can be obtained by those skilled in the art without inventive efforts.
FIG. 1 is a schematic diagram of an overall structure for implementing the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 3 is a schematic view of the outer sleeve and the inner sleeve securing the outer balloon;
FIG. 4 is a perspective view of the outer sleeve, the inner sleeve, the outer balloon and the inner balloon in use;
FIG. 5 is an enlarged schematic view of the first ends of the inner and outer sleeves;
FIG. 6 is a schematic view of a configuration in which an expanded pipe is provided at the first end of the inner casing;
FIG. 7 is a cross-sectional view of the injection tube and handle in use;
FIG. 8 is a schematic view of an enlarged cross-sectional view of the contrast media infusion tube and seal;
FIG. 9 is a cross-sectional structural view of the handle;
fig. 10 is a schematic cross-sectional structure view of the outer sleeve, the inner sleeve, the contrast medium infusion tube and the handle.
In the figure, 1, an outer sleeve; 11. clamping the first pipe; 2. an inner sleeve; 21. clamping a second pipe; 22. an expansion pipe; 3. an outer bladder body; 4. an inner bladder body; 41. a contrast agent infusion tube; 5. an injection pipe; 51. a first conduit; 52. a second conduit; 6. a handle; 61. a channel; 62. a gripper; 63. a duct; 7. a connecting member; 71. a first connecting pipe; 72. a second connecting pipe; 73. a threaded pipe; 74. a seal member; 8. sealing the cap; 81. sealing the tube; 82. a threaded barrel.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by using specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and efficacies of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Embodiments of the present disclosure and examples thereof are described in detail below with reference to the accompanying drawings.
Fig. 1 is a general structural view of the present invention, fig. 2 is a general sectional structural view of the present invention, and as shown in fig. 1-2, the present embodiment provides a double-lumen balloon catheter for nucleus pulposus repair, which is used for implanting an artificial spinal implant, and comprises:
the outer capsule body 3 extends to one end to form an opening, and the artificial nucleus pulposus prosthesis is injected through the opening to ensure that the outer capsule body 3 is filled to form the spinal implant;
the inner bag body 4 is sleeved inside the outer bag body 3 and is used for containing contrast medium so as to position the embedded position of the outer bag body 3;
a contrast agent infusion tube 41 which is communicated with the inner balloon body 4 and is used for infusing contrast agent into the inner balloon body 4;
the outer sleeve 1 and the inner sleeve 2, the inner sleeve 2 is communicated with the outer balloon body 3; one end of the outer sleeve 1 and the other end of the inner sleeve 2, which are both located in the same direction, is a first end, and the other end is a second end, the first end is used for fixing the outer balloon 3, wherein a first cavity is formed between the inner surface of the outer sleeve 1 and the outer surface of the inner sleeve 2, an opening of the outer balloon 3 is located in the first cavity, and the outer sleeve 1 and the inner sleeve 2 simultaneously press the opening of the outer balloon 3 towards the direction of the first cavity, so that the opening of the outer balloon 3 is fixed in the first cavity; releasing the compression of the opening releases the outer bladder 3.
In some embodiments of the present application, the inner cannula 2 extends into the outer balloon 3 such that the inner cannula 2 is in communication with the outer balloon 3 for injecting the artificial nucleus prosthesis into the outer balloon 3 through the inner cannula 2.
The inner cannula 2 is sleeved outside the contrast medium infusion tube 41, and the outer cannula 1 is sleeved outside the inner cannula 2. The contrast agent enters the inner capsule body 4 through the contrast agent infusion tube 41, the artificial nucleus pulposus prosthesis enters the outer capsule body 3 through the inner sleeve 2, and the paths of the contrast agent and the artificial nucleus pulposus prosthesis are different, so that the problem that inconsistent liquid is injected into the outer capsule body 3 or the inner capsule body 4 is solved.
A handle 6 is arranged and sleeved at the second end of the outer sleeve 1 and used for stabilizing the matching of the outer sleeve 1 and the inner sleeve 2, and the handle 6 is detachably and fixedly connected with the outer sleeve 1.
In some embodiments of the present application, the outer capsule 3 is a cavity structure with an open end, the outer capsule 3 has a deforming force, and the outer capsule 3 after injecting the artificial nucleus pulposus prosthesis is inflated and deformed to fill the space of the original nucleus pulposus. The outer capsule 3 after injection of the artificial nucleus prosthesis can replace the function of the nucleus. As shown in fig. 3-4, the outer sleeve 1 and the inner sleeve 2 in this embodiment together extrude the opening of the outer balloon 3, so that the outer balloon 3 is clamped at the first ends of the outer sleeve 1 and the inner sleeve 2, meanwhile, the handle 6 stably fits the second ends of the outer sleeve 1 and the inner sleeve 2, the handle 6 is held, and the outer balloon 3 can be moved by moving the outer sleeve 1; the outer balloon 3 can be released by releasing the extrusion to the outer balloon 3, so that the outer balloon 3 is separated from the outer sleeve 1 and the inner sleeve 2, and the outer balloon 3 is placed into the intervertebral disc.
In some embodiments of the present application, the outer capsule 3 has a cavity structure with an open end, the outer capsule 3 has a deformation force, and the outer capsule 3 after injecting the artificial nucleus prosthesis conforms to the anatomical structure of the nucleus pulposus and can replace the function of the nucleus pulposus. More specifically, the outer capsule 3 is a soft capsule structure, and after the artificial nucleus pulposus prosthesis is injected, the outer capsule 3 plays a role in uniformly dispersing stress on the intervertebral disc, so that a certain part of the intervertebral disc is prevented from being damaged due to excessive load. Specifically, the artificial nucleus pulposus prosthesis is self-curing silica gel or hydrogel. Preferably, the self-curing silica gel is injected into the outer capsule 3 and then is cured and molded to form the spinal implant.
The outer bag body 3 in a standby state is of a flat bag-shaped structure, is in an uninflated balloon shape, one end of the outer bag body is expanded, and the other end of the outer bag body is provided with an opening; the outer balloon body 3 in the filling state extends to one end to form an opening, wherein the extending part is of a tubular structure, and the tubular structure is sleeved outside the inner sleeve 2 and is positioned in the first cavity. In a use state, the tubular structure is located in a first cavity gap between the outer sleeve 1 and the inner sleeve 2, the outer sleeve 1 and the inner sleeve 2 extrude the tubular structure at the same time, and the tubular structure is tightly extruded by the outer sleeve 1 and the inner sleeve 2, so that the outer capsule body 3 is clamped and fixed, and the outer capsule body 3 can be released by releasing the extrusion of the outer sleeve 1 and the inner sleeve 2 on the tubular structure.
After the liquid support is filled into the outer capsule body 3, the outer capsule body 3 can expand and deform to be full of the space of the original nucleus pulposus under the action of pressure, so that the function of the original nucleus pulposus can be replaced.
As shown in fig. 5, in some embodiments of the present application, the first end of the outer sleeve 1 has a first clamping tube 11, the first clamping tube 11 is integrally connected with the outer sleeve 1, the inner diameter of the first clamping tube 11 is smaller than that of the outer sleeve 1, and the outer sleeve 1 and the first clamping tube 11 are connected by a transition tube; the first end of the inner sleeve 2 is provided with a second clamping pipe 21, the second clamping pipe 21 is integrally connected with the inner sleeve 2, the inner diameter of the second clamping pipe 21 is smaller than that of the inner sleeve 2, and the inner sleeve 2 is in transition connection with the second clamping pipe 21 through a second transition pipe; in a use state, the first transition pipe and the second transition pipe are staggered, so that the first clamping pipe 11 and the inner sleeve 2 jointly extrude the opening of the outer bag body 3. The principle of fixing the opening of the outer balloon 3 is: have the first lacuna of open-ended that can hold outer utricule 3 between chucking pipe 11 and interior sleeve pipe 2, misplace with transition pipe two when transition pipe one for the position of chucking pipe 11 corresponds with the first end of interior sleeve pipe 2, and chucking pipe 11 extrudees the opening jointly with interior sleeve pipe 2, thereby fixes outer utricule 3.
Specifically, the difference between the inner diameter of the first clamping tube 11 and the outer diameter of the inner sleeve 2 is a, the difference between the inner diameter of the first clamping tube 11 and the outer diameter of the second clamping tube 21 is B, and B is ≧ 2A, so that the first clamping tube 11 and the inner sleeve 2 can squeeze the tubular structure of the outer balloon 3, and the first clamping tube 11 and the second clamping tube 21 do not have the function of squeezing the tubular structure at the same time, that is, as long as the first clamping tube 11 is moved to a position corresponding to the inner sleeve 2 and not corresponding to the second clamping tube 21, the tubular structure can be squeezed, the first clamping tube 11 is moved to a position corresponding to the second clamping tube 21, and squeezing of the tubular structure can be released, and the purpose of releasing the outer balloon 3 is achieved. During operation, the direction moving to the first end is defined as a first direction, the direction moving to the second end is defined as a second direction, and the transition pipe moves to the second direction, so that the opening of the outer bag body 3 is extruded; the transition duct moves in a first direction to release the compression of the opening to the outer bladder 3. The outer bag body 3 is fixed after being extruded, so that an operator can conveniently hold the outer bag body; the outer balloon 3 can be released by releasing the extrusion of the outer balloon 3, so that the outer balloon 3 is implanted into the intervertebral disc to replace the function of nucleus pulposus. The section of the first transition pipe is an inclined surface which is inclined upwards from the first direction to the second direction, and the section of the second transition pipe is an inclined surface which is inclined upwards from the first direction to the second direction; the internal diameter of the outer sleeve 1 to the internal diameter of the first clamping pipe 11 is reduced, so that the opening of the outer capsule body 3 is squeezed tightly by the first clamping pipe 11 and the inner sleeve 2, the internal diameter of the inner sleeve 2 to the internal diameter of the second clamping pipe 21 is reduced, the second clamping pipe 21 extends into the opening of the outer capsule body 3, and the inner sleeve 2 is communicated with the outer capsule body 3.
Specifically, the inner sleeve 2 and the outer sleeve 1 are both cylindrical tubes.
Alternatively, as shown in fig. 6, in another embodiment of the present application, the outer sleeve 1 is sleeved outside the inner sleeve 2, the first end of the inner sleeve 2 has a swelling tube 22 swelling out in the direction of the outer sleeve 1, and the swelling tube 22 is inserted into the opening of the outer balloon 3, so that the tubular structure of the outer balloon 3 is sleeved outside the swelling tube 22; the distance between the outer sleeve 1 and the expansion pipe 22 is smaller than the distance between the outer sleeve 1 and the inner sleeve 2, the outer sleeve 1 is moved towards the first direction, so that the outer sleeve 1 and the expansion pipe 22 jointly extrude a tubular structure, and the outer bag body 3 is fixed; the outer tube 1 is moved in the second direction so that the outer tube 1 is displaced from the expansion tube 22 to release the tubular structure, and the outer bag body 3 can be released in this state. In the present embodiment, the diameter of the expansion tube 22 is larger than the diameter of the inner sleeve 2 and smaller than the inner diameter of the outer sleeve 1, so as to achieve the purpose of extruding the tubular structure to fix the outer balloon 3; the outer bag body 3 can be released quickly, and the efficiency and the time are saved.
In some embodiments of the present application, an injector is provided, which is detachably and fixedly connected to the handle 6, and is used for facilitating the operator to inject the artificial nucleus pulposus prosthesis into the outer balloon 3 and the contrast agent into the inner balloon 4, respectively.
The injector is a multi-channel tubular structure, and comprises pipelines respectively communicated with the inner sleeve 2 and the contrast agent infusion tube 41. Meets the requirements of connection with the handle 6, injection of the artificial nucleus pulposus prosthesis and injection of the contrast agent. Wherein the artificial nucleus pulposus prosthesis is self-curing silica gel or hydrogel.
As shown in fig. 7, preferably, the injector is a Y-shaped tube comprising a first tube 51 and a second tube 52, the first tube 51 is communicated with the inner cannula 2 through the second tube 52, and the second tube 52 is communicated with the inner capsule 4; in use, the artificial nucleus prosthesis is injected into the outer balloon 3 through the first conduit 51 and the contrast agent is injected into the inner balloon 4 through the second conduit 52. In this embodiment, the first pipeline 51 is a branch pipeline, the second pipeline 52 is a main branch pipeline, and the inner capsule 4 and the outer capsule 3 need to be filled with different substances respectively, so that the inner capsule 4 and the outer capsule 3 need to be ensured not to be communicated with each other, and the first pipeline 51 and the second pipeline 52 realize the independence of the inner capsule 4 and the outer capsule 3.
One end of the second tube 52 in the first direction is a first end, one end of the second tube 52 in the second direction is a second end, the second end of the second tube 52 is provided with a connector 7, the connector 7 is detachably and fixedly connected with the second tube 52, and the connector 7 is used for connecting a syringe to inject a contrast medium into the second tube 52. The first end of the second duct 52 is glued to the inner sleeve 2, so that the inner sleeve 2 can move synchronously with the second duct, for example: the connector 7 is moved in a second direction so that the inner cannula 2 is withdrawn from the patient.
The connecting member 7 includes a first connecting tube 71 extending into the second conduit 52, and a second connecting tube 72 communicating with the syringe, wherein the first connecting tube 71 communicates with the second conduit 52, the first connecting tube 71 communicates with the second connecting tube 72, and the first connecting tube 71 and the second connecting tube 72 are integrally formed. When the medical injector is used, the injector is communicated with the second connecting pipe 72, the contrast medium in the injector is injected into the second connecting pipe 72, and then the contrast medium flows through the first connecting pipe 71 and the second pipeline 52 in sequence and enters the inner capsule 4.
The connecting piece 7 further comprises a threaded pipe 73 provided with internal threads, the threaded pipe 73 is sleeved on the outer side of the first connecting pipe 71, the threaded pipe 73 is integrally connected with the first connecting pipe 71, a cavity allowing the second pipeline 52 to extend into is formed between the inner surface of the threaded pipe 73 and the outer surface of the first connecting pipe 71, the second pipeline 52 is provided with external threads, and the first threaded pipe 73 is in threaded connection with the second pipeline 52. In use, the second end of the second pipe 52 is inserted into the cavity between the threaded pipe 73 and the first connecting pipe 71, and the threaded pipe 73 is screwed to the second pipe 52, so that the connecting member 7 is fastened to the second pipe 52.
And a sealing cap 8 is arranged for sealing the second connecting pipe 72, and the sealing cap 8 is detachably and fixedly connected with the second connecting pipe 72. In a standby state, the sealing cap 8 is mounted on the second connecting pipe 72, so that the connecting piece 7 and the second pipeline 52 can be sealed, and the functions of protection and dust prevention are achieved.
The sealing cap 8 comprises a sealing pipe 81 and a thread cylinder 82, the sealing pipe 81 extends into the second connecting pipe 72, the thread cylinder 82 is integrally connected with the sealing pipe 81, the second connecting pipe 72 is provided with external threads, and the thread cylinder 82 is in threaded connection with the second connecting pipe 72. When the sealing cap is used, the sealing tube 81 extends into the second connecting tube 72, so that the second connecting tube 72 is sealed, and the sealing cap 8 is fixed on the second connecting tube 72 through the threaded cylinder 82.
In some embodiments of the present application, the injection tube 5 is threadedly coupled to the handle 6, wherein the first end of the second conduit 52 has external threads, the handle 6 has a bore 63 allowing the first end to extend therethrough, internal threads are provided in the bore 63 to mate with the external threads of the first end, and the second conduit 52 is threadedly coupled to the handle 6 such that the Y-shaped tube as a whole is detachably secured to the handle 6. See fig. 9.
Alternatively, in other embodiments of the present application, the injection tube 5 is clamped to the handle 6, the first end of the second tube 52 is provided with a groove, the handle 6 has a hole 63 allowing the first end to extend into, an elastic protrusion is provided in the hole 63, the second tube 52 is inserted into the hole 63 along the first direction, and when the corresponding position is reached, the elastic protrusion falls into the groove, so that the second tube 52 is clamped to the handle 6, and the injection tube 5 is fixed.
In some embodiments of the present application, the inner capsule 4 is hermetically connected to one end of the contrast medium infusion tube 41, the other end of the contrast medium infusion tube 41 is communicated with the second connecting tube 72, and the contrast medium infusion tube 41 in the use state penetrates through the inner sleeve 2 and the second conduit 52. When the artificial nucleus pulposus prosthesis is used, the injector containing the contrast agent is connected with the second connecting pipe 72, the contrast agent is injected into the head of the second connecting pipe 72, and the contrast agent enters the inner capsule body 4 through the second connecting pipe 72, the first connecting pipe 71 and the contrast agent infusion pipe 41, so that the positions of the inner capsule body 4 and the outer capsule body 3 are positioned, a doctor can conveniently adjust the position, and the optimal artificial nucleus pulposus prosthesis placing position is found.
The contrast agent infusion tube 41 is a cylindrical tube, and the contrast agent infusion tube 41 extends into the second connecting tube 72, so that the contrast agent can be efficiently received.
The diameter of the contrast agent infusion tube 41 is smaller than the inner diameter of the inner sleeve 2, the length of the contrast agent infusion tube 41 is larger than that of the inner sleeve 2, and the contrast agent infusion tube 41 extends out of the second end of the inner sleeve 2; the length of the inner sleeve 2 is greater than the length of the outer sleeve 1, the inner sleeve 2 extending from the second end of the outer sleeve 1.
As shown in fig. 8, the contrast medium feeding tube 41 is connected to the inside of the connector 7 by a seal 74, so that no liquid leaks between the contrast medium feeding tube 41 and the connector 7, and the leakage of the contrast medium is prevented.
The sealing element 74 is a tubular structure, the sealing element 74 is communicated with the first connecting pipe 71, the sealing element 74 is communicated with the second connecting pipe 72, the contrast medium infusion pipe 41 is glued with the sealing element 74, and the sealing element 74 is glued with the inner wall of the connecting piece 7.
Preferably, the seal 74 is located between the first connection tube 71 and the second connection tube 72, so that the contrast can directly enter the contrast infusion tube 41, and the loss of the contrast is reduced. Specifically, the inner diameter of the second connecting pipe 72 is larger than that of the first connecting pipe 71, so that a platform generated due to the difference of the inner diameters is arranged between the first connecting pipe 71 and the second connecting pipe 72, the sealing element 74 is cut along the first direction along the second direction, the cutting surface of the sealing element 74 is in a T shape, the end with the larger outer diameter of the sealing element 74 is glued with the platform, and the end with the smaller outer diameter of the sealing element 74 extends into the first connecting pipe 71, so that the sealing element 74 is fixed between the first connecting pipe 71 and the second connecting pipe 72; the contrast media infusion tube 41 is glued to the seal 74 so that the contrast media infusion tube 41 can efficiently receive contrast media and waste of contrast media is avoided.
As shown in fig. 9-10, in some embodiments of the present application, the handle 6 has a passage 61 that allows access to the second end of the outer cannula 1, the passage 61 communicating with the bore 63. The handle 6 is detachably and fixedly connected with the outer sleeve 1. Specifically, an internal thread is arranged in the channel 61, a second end of the outer sleeve 1 is provided with a matched external thread, the outer sleeve 1 is in threaded connection with the channel 61, and the outer sleeve 1 is installed in the channel 61 of the handle 6 by rotating the outer sleeve 1, so that the outer sleeve 1 is fixed on the handle 6 and can move synchronously with the handle 6.
Alternatively, in other embodiments of the present application, the handle 6 is connected to the outer sleeve 1 in a snap-fit manner, an elastic ball is disposed in the channel 61, a second end of the outer sleeve 1 is provided with a recess matched with the elastic ball, the outer sleeve 1 is inserted into the channel 61 of the handle 6 along a second direction, and when the corresponding position is reached, the elastic ball falls into the recess, so that the handle 6 and the outer sleeve 1 are fixed relatively, and the outer sleeve 1 and the handle 6 can move synchronously.
Alternatively, the handle 6 is glued to the outer sleeve 1, and the inner surface of the handle 6 is glued to the outer surface of the outer sleeve 1 by means of adhesive glue.
In some embodiments of the present application, the outer wall of the handle 6 is provided with a grip 62 for easy gripping, the grip 62 being integrally connected with the handle 6. The hand grips 62 are of a plate-shaped structure with a smooth and non-angular surface, at least two hand grips 62 are arranged, and the two hand grips 62 are distributed at equal intervals. The outer side wall of the handle 6 is provided with anti-slip threads, so that the handle 6 is prevented from slipping in the use process.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (10)
1. A dual lumen balloon catheter for nucleus repair for implantation of an artificial spinal implant, comprising:
the outer capsule body is provided with an opening extending towards one end, and the artificial nucleus pulposus prosthesis is injected through the opening to fill the outer capsule body;
the inner bag body is sleeved inside the outer bag body and is used for containing contrast medium so as to position the embedding position of the outer bag body;
a contrast agent infusion tube communicated with the inner capsule body and used for injecting contrast agent into the inner capsule body;
the inner sleeve is communicated with the outer capsule body; one end of the outer sleeve and the other end of the inner sleeve, which are both located in the same direction, is a first end, the other end of the outer sleeve and the other end of the inner sleeve are second ends, the first end is used for fixing the outer balloon, a first cavity is formed between the inner surface of the outer sleeve and the outer surface of the inner sleeve, an opening of the outer balloon is located in the first cavity, and the outer sleeve and the inner sleeve simultaneously press the opening of the outer balloon towards the direction of the first cavity, so that the opening of the outer balloon is fixed in the first cavity; releasing the compression of the opening releases the outer bladder.
2. The double-cavity balloon catheter for nucleus pulposus repair of claim 1, wherein the outer balloon body is a cavity structure with an opening at one end, the outer balloon body has a deformation force, and the outer balloon body after the artificial nucleus pulposus prosthesis is injected is inflated and deformed to be full of the space of the original nucleus pulposus; in the filling state, an opening extends towards one end of the outer bag body, the extending part is of a tubular structure, and the tubular structure is sleeved outside the inner sleeve and is positioned in the first cavity.
3. The double-lumen balloon catheter for nucleus pulposus repair according to claim 1, wherein a handle is provided, which is sleeved on the second end of the outer cannula and is used for stabilizing the matching of the outer cannula and the inner cannula, and the handle is fixedly connected with the outer cannula.
4. The double-cavity balloon catheter for nucleus pulposus repair according to claim 1, wherein a first clamping tube is arranged at the first end of the outer sleeve, the first clamping tube is integrally connected with the outer sleeve, the inner diameter of the first clamping tube is smaller than that of the outer sleeve, and the outer sleeve is in transition connection with the first clamping tube through a transition tube; the first end of the inner sleeve is provided with a second clamping pipe, the second clamping pipe is integrally connected with the inner sleeve, the inner diameter of the second clamping pipe is smaller than that of the inner sleeve, and the inner sleeve is in transition connection with the second clamping pipe through a second transition pipe; in a use state, the first transition pipe and the second transition pipe are staggered, so that the first clamping pipe and the inner sleeve pipe jointly extrude the opening of the outer bag body.
5. The double-lumen balloon catheter for nucleus pulposus repair according to claim 4, wherein the difference between the inner diameter of the first clamping tube and the outer diameter of the inner sleeve is A, and the difference between the inner diameter of the first clamping tube and the outer diameter of the second clamping tube is B, B is larger than or equal to 2A, so that the first clamping tube and the inner sleeve can squeeze the tubular structure of the outer balloon.
6. The dual lumen balloon catheter for nucleus repair of claim 5, defining a direction of movement toward the first end as a first direction and a direction of movement toward the second end as a second direction; the transition tube moves to a second direction, so that the opening of the outer balloon is squeezed; the transition pipe moves to the first direction to release the extrusion to the opening of the outer balloon body;
the section of the first transition pipe is an inclined surface which is inclined upwards from the first direction to the second direction, and the section of the second transition pipe is an inclined surface which is inclined upwards from the first direction to the second direction; the inner diameter of the outer sleeve pipe is reduced to the inner diameter of the first clamping pipe, so that the first clamping pipe and the inner sleeve pipe jointly squeeze the opening of the outer capsule body, the inner diameter of the inner sleeve pipe is reduced to the inner diameter of the second clamping pipe, the second clamping pipe extends into the opening of the outer capsule body, and the inner sleeve pipe is communicated with the outer capsule body.
7. The double-cavity balloon catheter for nucleus pulposus repair according to claim 3, wherein an injection member is arranged, and the injection member is detachably and fixedly connected with the handle and is used for facilitating an operator to respectively inject the artificial nucleus pulposus prosthesis into the outer balloon and inject the contrast agent into the inner balloon.
8. The dual lumen balloon catheter for nucleus repair of claim 7, wherein the injector is a Y-tube comprising a first tube and a second tube, the first tube in communication with the inner cannula through the second tube, the second tube in communication with the inner balloon; in use, the artificial nucleus pulposus prosthesis is injected into the outer balloon body through the first pipeline, and the contrast agent is injected into the inner balloon body through the second pipeline.
9. The double-lumen balloon catheter for nucleus pulposus repair of claim 8, wherein one end of the second conduit in the first direction is a first end, one end of the second conduit in the second direction is a second end, the second end of the second conduit is provided with a connecting piece, the connecting piece is detachably and fixedly connected with the second conduit, and the connecting piece is used for connecting a syringe to inject a contrast medium into the second conduit;
the connecting piece comprises a first connecting pipe extending into the second pipeline and a second connecting pipe communicated with the injector, the first connecting pipe is communicated with the second pipeline and is communicated with the second connecting pipe, and the first connecting pipe and the second connecting pipe are integrally formed.
10. The double-cavity balloon catheter for nucleus pulposus repair of claim 9, wherein the inner balloon body is hermetically connected with one end of the contrast agent infusion tube, the other end of the contrast agent infusion tube is communicated with the second connecting tube, and the contrast agent infusion tube in a use state penetrates through the inner sleeve and the second pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310161089.9A CN115844601B (en) | 2023-02-24 | 2023-02-24 | Double-cavity balloon catheter for nucleus pulposus repair |
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| CN202310161089.9A CN115844601B (en) | 2023-02-24 | 2023-02-24 | Double-cavity balloon catheter for nucleus pulposus repair |
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| CN115844601B CN115844601B (en) | 2023-05-16 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1371752A (en) * | 2001-02-27 | 2002-10-02 | 邹德威 | Pressre filling dilator and use method thereof |
| US20050027358A1 (en) * | 2003-07-29 | 2005-02-03 | Loubert Suddaby | Inflatable nuclear prosthesis |
| US20070093906A1 (en) * | 2005-10-26 | 2007-04-26 | Zimmer Spine, Inc. | Nucleus implant and method |
| CN105919649A (en) * | 2016-06-15 | 2016-09-07 | 汕头大学医学院第附属医院 | Telescopic intravascular foreign body extraction device |
| CN106214240A (en) * | 2016-08-02 | 2016-12-14 | 上海凯利泰医疗科技股份有限公司 | A kind of compression fracture of vertabral body is implanted and is filled prosthetic device |
| CN210541956U (en) * | 2019-07-05 | 2020-05-19 | 宜宾市第一人民医院 | Catheter capable of accurately releasing prostate stent |
| CN113395949A (en) * | 2018-09-04 | 2021-09-14 | 脊柱稳定技术有限责任公司 | Implantable nuclear prosthesis, kit and related methods |
-
2023
- 2023-02-24 CN CN202310161089.9A patent/CN115844601B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1371752A (en) * | 2001-02-27 | 2002-10-02 | 邹德威 | Pressre filling dilator and use method thereof |
| US20050027358A1 (en) * | 2003-07-29 | 2005-02-03 | Loubert Suddaby | Inflatable nuclear prosthesis |
| US20070093906A1 (en) * | 2005-10-26 | 2007-04-26 | Zimmer Spine, Inc. | Nucleus implant and method |
| CN105919649A (en) * | 2016-06-15 | 2016-09-07 | 汕头大学医学院第附属医院 | Telescopic intravascular foreign body extraction device |
| CN106214240A (en) * | 2016-08-02 | 2016-12-14 | 上海凯利泰医疗科技股份有限公司 | A kind of compression fracture of vertabral body is implanted and is filled prosthetic device |
| CN113395949A (en) * | 2018-09-04 | 2021-09-14 | 脊柱稳定技术有限责任公司 | Implantable nuclear prosthesis, kit and related methods |
| CN210541956U (en) * | 2019-07-05 | 2020-05-19 | 宜宾市第一人民医院 | Catheter capable of accurately releasing prostate stent |
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| CN115844601B (en) | 2023-05-16 |
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