CN212755852U

CN212755852U - Vertebroplasty reconstruction system

Info

Publication number: CN212755852U
Application number: CN202020420733.1U
Authority: CN
Inventors: 吴剑; 王升; 薛明星
Original assignee: Suzhou And Science & Technology Development Co ltd
Current assignee: Suzhou And Science & Technology Development Co ltd
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2021-03-23
Anticipated expiration: 2030-03-28

Abstract

The utility model discloses a vertebroplasty reconstruction system A type, the balloon fastening thread portion of the pull rod passes through the through hole portion of the handle component, the pull rod insertion portion of the catheter and the hollow portion of the titanium cage balloon, and is in threaded connection with the internal thread portion of the titanium cage balloon, and is screwed up and fixed; the boss internal thread part on the boss part is screwed with the force application thread part through a rotating handle, and is screwed and abutted through the nut part; the boss part is pulled out from the rotating handle, and the pull rod is driven to pull the titanium cage saccule to be expanded in the opposite direction of the titanium cage saccule; the two ends of the pull rod of the utility model are provided with the threaded parts, so that the two ends of the pull rod are stably connected, one end of the pull rod is connected with the titanium cage saccule, and the other end of the pull rod is connected with the boss part, so that the stability is better when the pull rod is pulled; the pull rod is also provided with a nut part, so that the connection stability is further improved; one end of the through hole part of the handle assembly is connected with the connecting part and is clamped and fixed through the step part and the fixing part, and the stability is good after the fixing.

Description

Vertebroplasty reconstruction system

Technical Field

The utility model relates to the field of medical equipment, concretely relates to vertebroplasty system of rebuilding.

Background

The incidence of osteoporosis and osteoporotic vertebral compression fractures increases with age, with an estimated incidence of over 50% in women over 80 years of age. The poor anatomical and biomechanical consequences of osteoporosis have a large impact on the chronic incidence and economic impact of osteoporosis. With the increasing demand for improved quality of life, immediate pain relief, early mobilization and maintenance of function has become a goal for the treatment of osteoporosis.

A single vertebral compression fracture results in a sagittal plane deformity and a greater bending moment of flexion around the fractured vertebral body, thereby reducing the force required to cause additional degrees and amounts to further increase, with a corresponding increase in kyphosis. Spinal deformities resulting from loss of vertebral body height also result in loss of lung capacity, malnutrition, reduced mobility and depression. Kyphosis secondary to osteoporotic vertebral compression fractures is associated with a 2 to 3 fold incidence of death due to pulmonary causes. In addition, pain associated with acute osteoporosis can be disabling and in many cases can become chronic. It is hypothesized that interventions to restore fractured vertebral body height and stabilize the fractured segment may improve spinal biomechanics, thereby mitigating these consequences.

Vertebroplasty and kyphoplasty are effective treatment options for osteoporosis. Disadvantages of vertebroplasty include high injection pressure, inability to correct deformity and cement extrusion. Similarly, poor directional reduction control, propagation of burst fractures and cement extrusion are deficiencies of kyphoplasty.

In order to solve the above technical difficulties, it is therefore necessary to devise a vertebroplasty reconstruction system aimed at stabilizing and restoring the height of a vertebral compression fracture, followed by the insertion of polymethylmethacrylate bone cement in a controlled and predictable manner. The implant is intended to overcome the disadvantages associated with vertebroplasty and kyphoplasty.

Disclosure of Invention

An object of the utility model is to provide a vertebroplasty rebuilds system, aim at stabilizing and recovering the height of centrum compression fracture, then insert polymethyl methacrylate bone cement with controllable and predictable mode.

In order to solve the technical problem, the utility model discloses a specific technical scheme as follows:

a vertebroplasty reconstruction system, comprising a titanium cage balloon, a catheter, a handle assembly, and a pull rod; the titanium cage balloon comprises a main body part and an external thread part; the inner part of the titanium cage sacculus is a hollow part, one end of the main body part is provided with an internal thread part, and the other end of the main body part is connected with the external thread part; one end of the hollow part is connected with the internal thread part, and the other end of the hollow part penetrates through the external thread part; the middle part of the main body part is a deformed net part, and hollow parts of the deformed net part are parallelograms and are uniformly distributed with circumferences; the deformed mesh portion is deformed into a cage shape when a tensile force is applied to one end of the main body portion toward the other end of the male screw portion; the catheter comprises a tubular portion, and a connecting portion; one end of the tubular part is provided with a locking thread part, and the locking thread part is in threaded connection and locking with the external thread part; the other end of the tubular part is connected with the connecting part; the connecting part comprises a step part and a fixing part; the inner part of the conduit is a pull rod insertion part; the handle assembly comprises a fixed handle, a rotating handle and a handle connecting part; the rotary handle is connected with the fixed handle through the handle connecting part, and the rotary handle can rotate relative to the fixed handle; the improved handle is characterized in that a boss part is arranged on the rotating handle, the boss part can be pulled out in a sliding mode relative to the rotating handle, a boss internal thread part is arranged in the boss part, a through hole part is arranged inside the handle assembly, one end of the through hole part is connected with the connecting part and passes through the step part and the fixing part in a clamping mode, and the other end of the through hole part is used for inserting the pull rod.

Further, the pull rod comprises a pull rod main body part, a nut part and a force application part; one end of the pull rod main body part is provided with a balloon fastening thread part, and the other end of the pull rod main body part is provided with a force application thread part; the force application thread part is fixedly connected with the force application part, the force application thread part is in threaded connection with the nut part, and the force application thread part can be in threaded connection with the boss internal thread part; the balloon fastening thread part of the pull rod penetrates through the through hole part of the handle assembly, the pull rod inserting part of the catheter and the hollow part of the titanium cage balloon, and is in threaded connection with the internal thread part of the titanium cage balloon, and the titanium cage balloon is screwed and fixed; the boss internal thread part on the boss part is screwed with the force application thread part through rotating the rotating handle, and the nut part is screwed and abutted; and pulling the boss part out of the rotating handle to drive the pull rod to pull the titanium cage saccule to be opened in the opposite direction of the titanium cage saccule.

Further, the titanium cage saccule is cylindrical in the original state and is in a cage shape with an expanded middle after being expanded.

The utility model discloses beneficial effect as follows: the utility model discloses a titanium cage sacculus of vertebroplasty system is a columniform bag, expands in the centre after the installation operation, helps reducing vertebral fracture to keep the centrum height. Cement is then injected into the deployed implant. In reconstructing and preserving the height of the vertebral body, it can provide a safe reinforcement, avoiding the loss of distraction height during decompression after balloon expansion. The hollow part of the deformed net part of the titanium cage saccule is parallelogram and is evenly distributed with circumference, so that the titanium cage is convenient to be propped open during operation, and the titanium cage is stable after being propped open; the titanium cage saccule is deformed by applying tension, so that the operation is convenient and the titanium cage saccule is easy to be opened; both ends of the pull rod are provided with threaded parts, so that both ends of the pull rod are stably connected, one end of the pull rod is connected with the titanium cage balloon, and the other end of the pull rod is connected with the boss part, so that the pull rod has better stability during pulling; the pull rod is also provided with a nut part, so that the connection stability is further improved; one end of the through hole part of the handle assembly is connected with the connecting part and is clamped and fixed through the step part and the fixing part, and the stability is good after the fixing. The utility model discloses a boss portion can slide for twist grip and pull out, and after pull rod and boss portion locking, pull out boss portion from twist grip, drive the pull rod and strut to the opposite direction pulling titanium cage sacculus of titanium cage sacculus, convenient operation, the guidance quality is better, guarantees the state that the titanium cage sacculus struts.

Drawings

FIG. 1: a map of a vertebroplasty reconstruction system;

FIG. 2: the structure diagram of the titanium cage saccule;

FIG. 3: a structural drawing of the catheter;

FIG. 4: a structural view of the handle assembly;

FIG. 5: a construction of the tie rod;

FIG. 6: working principle diagram of the vertebroplasty reconstruction system.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and specific examples.

1-6, a vertebroplasty reconstruction system comprises a titanium cage balloon 1, a catheter 2, a handle assembly 3, and a pull rod 4; the titanium cage saccule 1 is cylindrical in the original state and is in a cage shape with an expanded middle after being expanded; the titanium cage balloon 1 comprises a main body part 12 and an external thread part 14; the inside of the titanium cage saccule 1 is a hollow part, one end of the main body part 12 is provided with an internal thread part 11, and the other end is connected with an external thread part 14; one end of the hollow part is connected with the internal thread part 11, and the other end penetrates through the external thread part 14; the middle part of the main body part 12 is a deformed net part 13, and hollow parts of the deformed net part 13 are parallelograms and are uniformly distributed with circumferences; when a pulling force is applied to one end of the main body portion 12 toward the other end of the male screw portion 14, the deformed mesh portion 13 is deformed into a cage shape; the catheter 2 comprises a tubular portion 22, and a connecting portion 23; one end of the tubular part 22 is provided with a locking thread part 26, and the locking thread part 26 is in threaded connection and locking with the external thread part 14; the other end of the tubular portion 22 is connected to the connecting portion 23; the connecting portion 23 includes a step portion 24, and a fixing portion 25; the interior of the conduit 2 is a pull rod insertion part 21; the handle assembly 3 includes a fixed handle 31, a rotating handle 32, and a handle connecting portion 33; the rotating handle 32 is connected with the fixed handle 31 through a handle connecting part 33, and the rotating handle 32 can rotate relative to the fixed handle 31; the rotary handle 32 is provided with a boss part 34, the boss part 34 can be drawn out in a sliding way relative to the rotary handle 32, a boss internal thread part is arranged in the boss part 34, a through hole part is arranged in the handle component 3, one end of the through hole part is connected with the connecting part 2 and is clamped and fixed through the step part 24 and the fixing part 25, and the other end of the through hole part is used for inserting the pull rod 4; the pull rod 4 includes a pull rod main body portion 42, a nut portion 44, and an urging portion 45; one end of the pull rod main body part 42 is provided with a balloon fastening thread part 41, and the other end is provided with an applying thread part 43; the force application thread part 43 is fixedly connected with the force application part 45, the force application thread part 43 is in threaded connection with the nut part 44, and the force application thread part 43 can be in threaded connection with the boss internal thread part; the balloon fastening thread part 41 of the pull rod 4 passes through the through hole part of the handle component 3, the pull rod insertion part 21 of the catheter 2 and the hollow part of the titanium cage balloon 1, is in threaded connection with the internal thread part 11 of the titanium cage balloon 1 and is screwed and fixed; by rotating the handle 32, the boss female screw portion on the boss portion 34 is screwed to the biasing screw portion 43, and is screwed and abutted by the nut portion 44; the boss part 34 is pulled out from the rotating handle 32, and the pull rod 4 is driven to pull the titanium cage saccule 1 to be expanded in the opposite direction of the titanium cage saccule 1.

The operation steps of the vertebroplasty reconstruction system are as follows: (1) screwing the external thread part 14 of the titanium cage saccule 1 into the locking thread part 26 of the catheter 2 and locking; (2) the catheter 2 with the titanium cage sacculus 1 is arranged in the handle component 3 through the connecting part 23 of the catheter 2 and is locked firmly; (3) inserting the pull rod 4 into the handle assembly 3, and screwing the balloon fastening thread part 41 of the pull rod 4 into the internal thread part 11 of the titanium cage balloon 1; (4) rotating the handle unit 3 to screw the boss female screw portion of the boss portion 34 into the force application screw portion 43 and to be screwed and abutted by the nut portion 44; (5) the boss part 34 is pulled out from the rotating handle 32, and the pull rod 4 is driven to pull the titanium cage saccule 1 to be expanded in the opposite direction of the titanium cage saccule 1.

However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.

Claims

1. A vertebroplasty reconstruction system, comprising: comprises a titanium cage sacculus (1), a catheter (2), a handle component (3) and a pull rod (4); the titanium cage saccule (1) comprises a main body part (12) and an external thread part (14); the titanium cage saccule (1) is internally hollow, one end of the main body part (12) is provided with an internal thread part (11), and the other end of the main body part is connected with the external thread part (14); one end of the hollow part is connected with the internal thread part (11), and the other end of the hollow part penetrates through the external thread part (14); the middle part of the main body part (12) is a deformed net-shaped part (13), and hollow parts of the deformed net-shaped part (13) are in a parallelogram shape and are uniformly distributed with a circumference; the deformation mesh portion (13) is deformed into a cage shape when a tensile force is applied to one end of the main body portion (12) to the other end of the male screw portion (14); the catheter (2) comprises a tubular portion (22), and a connecting portion (23); one end of the tubular part (22) is provided with a locking thread part (26), and the locking thread part (26) is in threaded connection and locked with the external thread part (14); the other end of the tubular part (22) is connected with the connecting part (23); the connecting portion (23) includes a step portion (24), and a fixing portion (25); a pull rod insertion part (21) is arranged in the guide pipe (2); the handle assembly (3) comprises a fixed handle (31), a rotating handle (32) and a handle connecting part (33); the rotating handle (32) is connected with the fixed handle (31) through the handle connecting part (33), and the rotating handle (32) can rotate relative to the fixed handle (31); the novel handle is characterized in that a boss portion (34) is arranged on the rotating handle (32), the boss portion (34) can be pulled out in a sliding mode relative to the rotating handle (32), a boss internal thread portion is arranged in the boss portion (34), a through hole portion is arranged inside the handle assembly (3), one end of the through hole portion is connected with the connecting portion (23) and passes through the step portion (24) and the fixing portion (25) in a clamping mode, and the other end of the through hole portion is used for inserting the pull rod (4).

2. The vertebroplasty reconstruction system of claim 1, wherein: the pull rod (4) comprises a pull rod main body part (42), a nut part (44) and an application part (45); one end of the pull rod main body part (42) is provided with a balloon fastening thread part (41), and the other end is provided with an applying thread part (43); the force application thread part (43) is fixedly connected with the force application part (45), the force application thread part (43) is in threaded connection with the nut part (44), and the force application thread part (43) can be in threaded connection with the boss internal thread part; a balloon fastening threaded part (41) of the pull rod (4) penetrates through a through hole part of the handle assembly (3), a pull rod inserting part (21) of the catheter (2) and a hollow part of the titanium cage balloon (1), is in threaded connection with an internal threaded part (11) of the titanium cage balloon (1), and is screwed and fixed; a boss female screw portion on the boss portion (34) is screwed with the biasing screw portion (43) by rotating a rotation handle (32), and is screwed and abutted by the nut portion (44); and pulling the boss part (34) out of the rotating handle (32) to drive the pull rod (4) to pull the titanium cage saccule (1) to be expanded in the opposite direction of the titanium cage saccule (1).

3. A vertebroplasty reconstruction system as in claim 1 or 2, wherein: the titanium cage saccule (1) is cylindrical in the original state and is in a cage shape with an expanded middle after being expanded.