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Bone cement bolus device that prevents leakage of bone cement

A bone cement and push rod technology, applied in the direction of internal bone synthesis, fixers, internal fixators, etc., can solve the problems of poor surgical effect and difficulty in restoring the ideal height, so as to prevent and reduce the leakage of bone cement rate, stable effect of injection

Active Publication Date: 2022-05-20
ZHEJIANG CANWELL MEDICAL DEVICES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) There are shortcomings in restoring the height of the injured vertebrae, it is difficult to restore the ideal height, resulting in poor surgical results

Method used

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  • Bone cement bolus device that prevents leakage of bone cement
  • Bone cement bolus device that prevents leakage of bone cement
  • Bone cement bolus device that prevents leakage of bone cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] See attached figure 1 to attach Figure 5 , the embodiment of the present invention discloses a bone cement injection device capable of preventing bone cement leakage, comprising: an expansion outer tube 1, a bone cement sleeve 2 and a push rod 3;

[0066] The expansion outer tube 1 is a hollow tube body with both ends open, and the side wall is a double-layer structure with an injection cavity 11; one end of the expansion outer tube 1 is an injection end 12, and the outer wall has a connection with the injection cavity 11 Pipe 13, the other end is the operating end 14, and the outer wall has a ring-shaped flexible expansion part 15;

[0067] The bone cement sleeve 2 is a hollow tube with openings at both ends, and is inserted into the expansion outer tube 1 from the injection end 12, and passes through the operation end 14; the bone cement sleeve 2 is in clearance fit with the expansion outer tube 1, and one end The end and the injection end 12 are tightly limited; ...

Embodiment 2

[0082] See attached Figure 9 to attach Figure 13 , this embodiment is improved on the basis of embodiment 1:

[0083] It also includes a fixed rod 4 that is threadedly connected to the operating end 14 of the expanded outer tube 1. The fixed rod 4 forms a T-shaped structure with the rod body of the expanded outer tube 1; 1 parallel lower cylinder 5, the bottom end of the lower cylinder 5 has an exhaust hole 51; both ends of the locking block 21 have a piston rod 6 parallel to the bone cement sleeve 2, and both ends of the piston rod 6 have Rubber head 61; Piston rod 6 axial center is provided with through its two ends, and the air guide hole 62 that inner diameter is larger than exhaust hole 51; The direction facing away from the expansion outer tube 1 has an upper cylinder 7 parallel to the push rod 3; the upper cylinder 7 is connected with the end of the piston rod 6 facing the push rod 3.

[0084] In order to further optimize the above technical solution, the length of...

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Abstract

The invention discloses a bone cement injection device capable of preventing bone cement leakage, which comprises an expansion outer tube, a bone cement sleeve and a push rod; the expansion outer tube is a hollow tube with two ends open, and the side wall is The double-layer structure of the injection cavity; one end of the expansion outer tube is the injection end, and the outer wall has a connecting tube communicating with the injection cavity, and the other end is the operation end, and the outer wall has a ring-shaped flexible expansion part; the bone cement sleeve is two A hollow tube with an open end, inserted into the expansion outer tube from the injection end, and passed through the operation end; the bone cement sleeve and the expansion outer tube are in clearance fit, and one end of the end is tightly limited by the injection end; the push rod Insert it into the bone cement sleeve from the injection end, and fit with the gap of the bone cement sleeve. The invention is equipped with a flexible expansion part, which can form a close fit with the irregular hole channel of the bone cement injection after the pressure medium is injected into the injection cavity, can effectively block the path of bone cement leakage, and greatly reduce the risk of PVP and PKP operations. Bone cement leakage rate.

Description

technical field [0001] The invention relates to the technical field of medical devices, and more specifically relates to a bone cement injection device capable of preventing bone cement leakage in PKP or PVP operations. Background technique [0002] With the aging of the population, the incidence of osteoporosis in the elderly population is increasing day by day. As the main complication of osteoporosis, vertebral compression fractures seriously affect the quality of life of patients. Osteoporotic vertebral compression fractures are characterized by sudden back pain, and there are more than 1.4 million new cases each year. According to reports, the mortality rate of patients with osteoporotic vertebral compression fractures within 5 years can be as high as 23 %-34%. Osteoporotic vertebral compression fractures (osteoporotic vertebral compression fractures, OVCF) mainly occur in elderly patients. In the past, conservative treatment was often used, including bed rest and loca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/88A61B17/70
CPCA61B17/8825A61B17/8819A61B17/7094
Inventor 牟国良滕鲁虞方磊应胜星王若帆彭伟方明
Owner ZHEJIANG CANWELL MEDICAL DEVICES CO LTD