CN219250379U - Free body extractor in joint cavity - Google Patents

Abstract

The utility model discloses a free body extractor in a joint cavity, which drives a free body extraction spring to extend to enlarge a gap through a spring stay cord, and after the free body enters the free body extraction spring, a stay cord holding column is loosened to restore to the original position, so that the free body is locked in a free body holding pipe, the free body can be conveniently captured, and the free body is prevented from slipping and being difficult to extract. The novel multifunctional spring is characterized by comprising a stay cord holding column, a free body holding pipe, a free body taking-out spring, a spring supporting plate, a connecting supporting rod and a spring stay cord, wherein a group of connecting supporting rods are arranged on the spring supporting plate, one end of each connecting supporting rod is connected with the spring supporting plate, the other end of each connecting supporting rod is connected with one end of the free body holding pipe, an arc-shaped inclined section is formed in the edge of each spring supporting plate, the area of one surface of each spring supporting plate, which is connected with each connecting supporting rod, is smaller than the area of the other surface of each connecting supporting rod, and the group of connecting supporting rods consists of three connecting supporting rods.

Description

Free body extractor in joint cavity

Technical Field

The utility model relates to a tool for taking out free bodies in a joint cavity, belongs to the technical field of medical equipment, and particularly relates to a free body extractor which can be used for conveniently catching the free bodies and preventing the free bodies from slipping and being difficult to take out.

Background

The free body of the joint refers to tissue fragments which fall off from tissues in the joint when the joint has a shape-withdrawing lesion or injury, most commonly seen in the knee joint, the free body can change the position of the free body in a joint cavity due to joint movement, the clinical manifestation is knee joint pain, interlocking and the like, if the free body is not taken out timely, joint dysfunction can be caused, damage to other tissue structures such as cartilage is further aggravated, the free body needs to be removed from the joint cavity, no special tool for removing the free body is clinically used at present, but only ordinary vascular clamps or nucleus pulposus clamps can be used for clamping and removing under arthroscope, the upper and lower clamp mouths of medical instruments such as nucleus pulposus clamps or ordinary vascular clamps are designed to have a lip occlusion relation, the free body is easy to slip and difficult to capture once the free body with irregular morphology or smooth surface is encountered, in addition, the free body is likely to float in a liquid in the joint cavity filled with physiological saline, and the free body is difficult to clamp accurately even if the clamping is successful, and the free body is easy to crack or slip due to excessive force.

Disclosure of Invention

In order to improve the situation, the utility model provides the free body extractor in the joint cavity, which drives the free body extraction spring to extend to enlarge the gap through the spring stay cord, and after the free body enters the free body extraction spring, the stay cord holding column is loosened to restore to the original position, so that the free body is locked in the free body holding tube, the free body can be conveniently captured, and the free body is prevented from slipping and being difficult to extract.

The utility model discloses a free body extractor in a joint cavity, which is realized by the following steps: the utility model relates to a free body extractor in a joint cavity, which consists of a stay cord holding column, a free body holding pipe, a free body extracting spring, a spring supporting plate, a connecting supporting rod and a spring stay cord,

a group of connecting support rods are arranged on the spring support plate, one end of each connecting support rod is connected with the spring support plate, the other end of each connecting support rod is connected with one end of the free body containing tube,

preferably, the edge of the spring supporting plate is provided with an arc inclined section, the area of one surface of the spring supporting plate connected with the connecting supporting rod is smaller than that of the other surface,

preferably, one group of the connecting support rods consists of three connecting support rods which are distributed at equal intervals along the circumferential direction of the free body containing tube,

the free body taking-out spring is arranged on the spring supporting plate, one end of the free body taking-out spring is connected with the spring supporting plate,

preferably, the other end of the free body taking-out spring passes through one end of the free body containing pipe and extends into the free body containing pipe,

one end of the spring stay cord is connected with the other end of the free body taking-out spring, the other end of the spring stay cord is connected with one end of the stay cord holding column,

preferably, the stay cord holding column is of a cylindrical structure, the diameter of the stay cord holding column is firstly kept unchanged from the middle part to the two ends, then gradually reduced, the maximum diameter of the stay cord holding column is larger than the pipe diameter of the free body containing pipe,

preferably, one end of the stay cord holding column is clamped in the other end of the free body containing pipe, and the other end of the stay cord holding column is of an arc-shaped structure;

further, a poking rod avoiding groove is formed in the side wall of the free body containing pipe, the poking rod avoiding groove is a through groove, the length of the poking rod avoiding groove is consistent with that of the free body containing pipe, the free body poking rod is inserted into the free body containing pipe, a handle is arranged at the end part of the free body poking rod, the handle is of a strip-shaped structure, and the handle is perpendicular to the free body poking rod;

further, a group of arc through grooves are formed in the edge of the spring support plate, each arc through groove is composed of a plurality of arc through grooves, the arc through grooves are distributed at equal intervals along the circumferential direction of the spring support plate, the bottoms of the arc through grooves are of arc structures, arc inclined sections are formed in the edge of the spring support plate, the area of one surface, connected with the connecting support columns, of the spring support plate is smaller than that of the other surface, a group of connecting support rods are arranged on the spring support plate, one end of each connecting support rod is connected with the spring support plate, and the other end of each connecting support rod is connected with one end of the free body containing tube;

further, the side wall of the free body containing pipe is provided with a free body taking-out groove, the free body taking-out groove is of an arc-shaped structure, the width of the free body taking-out groove is larger than the pipe diameter of the free body containing pipe, the width of a notch of the free body taking-out groove is larger than the width of the groove bottom of the free body taking-out groove, the free body taking-out groove is close to the other end of the free body containing pipe, and the free body taking-out groove is a through groove;

further, the side wall of the free body containing pipe is provided with a rectangular through groove, the rectangular through groove is of a rectangular structure, the width of the rectangular through groove is larger than the pipe diameter of the free body containing pipe, the width of the notch of the rectangular through groove is larger than the width of the bottom of the rectangular through groove, and the rectangular through groove is close to the other end of the free body containing pipe.

Advantageous effects

The free body can be conveniently captured, and the free body is prevented from slipping and being difficult to take out.

Simple structure, convenience and practicality.

Low cost and convenient popularization.

Drawings

FIG. 1 is a perspective view of a free body extractor in a joint cavity according to the present utility model;

FIG. 2 is a perspective view of the free body extractor in the joint cavity of the present utility model showing only the structure of the free body extracting spring;

FIG. 3 is a schematic view showing the structure of an intra-articular cavity free body extractor according to example 2 of the present utility model;

FIG. 4 is a schematic structural view of example 3 of the intra-articular cavity free body extractor of the present utility model showing only the structure at the spring support plate;

FIG. 5 is a schematic view showing the structure of an embodiment 4 of the intra-articular cavity free body extractor of the present utility model;

FIG. 6 is a schematic view showing the structure of example 5 of the intra-articular cavity free body extractor of the present utility model;

wherein the method comprises the following steps: stay cord holds post 1, free body holds siphunculus 2, free body take out spring 3, spring support board 4, connecting rod 5, spring stay cord 6, poking rod dodges groove 7, free body poking rod 8, arc logical groove 9, free body takes out groove 10, rectangle logical groove 11

Detailed Description

Examples

The utility model discloses a free body extractor in a joint cavity, which is realized by the following steps: consists of a stay cord holding column 1, a free body holding pipe 2, a free body taking-out spring 3, a spring supporting plate 4, a connecting supporting rod 5 and a spring stay cord 6,

a group of connecting support rods 5 are arranged on the spring support plate 4, one end of each connecting support rod 5 is connected with the spring support plate 4, the other end of each connecting support rod 5 is connected with one end of the free body containing tube 2,

preferably, the edge of the spring supporting plate 4 is provided with an arc inclined section, the area of one surface of the spring supporting plate 4 connected with the connecting supporting rod 5 is smaller than that of the other surface,

preferably, one group of the connecting support rods 5 consists of three connecting support rods 5, the three connecting support rods are distributed at equal intervals along the circumferential direction of the free body containing tube 2,

the free body taking-out spring 3 is arranged on the spring supporting plate 4, one end of the free body taking-out spring 3 is connected with the spring supporting plate 4,

preferably, the other end of the free body taking-out spring 3 passes through one end of the free body containing tube 2 and extends into the free body containing tube 2,

one end of a spring stay cord 6 is connected with the other end of the free body taking-out spring 3, the other end of the spring stay cord 6 is connected with one end of a stay cord holding column 1,

preferably, the stay cord gripping column 1 is in a cylindrical structure, the diameter of the stay cord gripping column 1 is firstly kept unchanged from the middle part to the two ends, then gradually reduced, the maximum diameter of the stay cord gripping column 1 is larger than the pipe diameter of the free body containing pipe 2,

preferably, one end of the stay cord holding column 1 is clamped in the other end of the free body containing pipe 2, and the other end of the stay cord holding column 1 is of an arc-shaped structure;

preferably, the free body containing pipe 2 is made of martensitic stainless steel material, the martensitic stainless steel needs to be subjected to quenching and tempering treatment in the mechanical manufacturing process, so as to improve the strength, hardness, rigidity, wear resistance and corrosion resistance of the device, and has proper toughness, and the martensitic stainless steel has poor corrosion resistance, so that the martensitic stainless steel needs to be subjected to surface treatment after finish grinding and polishing forming, and usually adopts chromium plating and passivation treatment;

when the free body accommodating tube 2 is used, in an initial state, an arthroscope is arranged outside the free body accommodating tube 2, the free body accommodating tube 2 and the free body taking-out spring 3 extend into a joint cavity together through a notch, illumination equipment on the arthroscope is turned on to find the position of the free body, the free body taking-out spring 3 is close to the free body, then the stay rope holding column 1 is held to be pulled outwards, the free body taking-out spring 3 is pulled to stretch by the spring stay rope 6, a spring gap is enlarged, after the free body self-enters the free body taking-out spring 3, the stay rope holding column 1 is loosened to enable the free body taking-out spring 3 to compress and return to the original position, the spring gap is closed, the free body is locked in the free body taking-out tube 2 is taken out from the notch, and then the free body in the free body taking-out tube is carried out;

examples

This embodiment differs from embodiment 1 in that: the side wall of the free body containing pipe 2 is provided with a poking rod avoiding groove 7, the poking rod avoiding groove 7 is a through groove, the length of the poking rod avoiding groove 7 is consistent with that of the free body containing pipe 2, the free body poking rod 8 is inserted into the free body containing pipe 2, the end part of the free body poking rod 8 is provided with a handle, the handle is of a strip-shaped structure, and the handle is perpendicular to the free body poking rod 8; when the free body accommodating pipe 2 and the free body taking-out spring 3 extend into the joint cavity, the free body poking rod 8 extends out of the poking rod avoiding groove 7, and the free body floating in the joint cavity is poked into the gap of the extended free body taking-out spring 3 to capture and take out, so that the taking-out efficiency is higher compared with the case of waiting for the free body to enter the free body taking-out spring 3 by itself;

examples

This embodiment differs from embodiment 1 in that: the edge of the spring support plate 4 is provided with a group of arc through grooves 9, the group of arc through grooves 9 are formed by a plurality of arc through grooves 9, the arc through grooves 9 are distributed at equal intervals along the circumferential direction of the spring support plate 4, the bottom of each arc through groove 9 is of an arc structure, the edge of the spring support plate 4 is provided with an arc inclined section, the area of one surface of the spring support plate 4 connected with the connecting support rod 5 is smaller than the area of the other surface, the spring support plate 4 is provided with a group of connecting support rods 5, one end of each connecting support rod 5 is connected with the spring support plate 4, and the other end of each connecting support rod 5 is connected with one end of the free body containing tube 2; when the knee joint is used, when the free body is clamped in a certain part of the knee joint, the edge of the spring support plate 4 can be aligned with the clamped free body, the free body is clamped with the spring support plate through the arc-shaped through groove 9, the free body accommodating pipe 2 is rotated to drive the spring support plate 4 to rotate, and then the free body is taken out from the clamping position, so that the free body can be taken out conveniently;

examples

This embodiment differs from embodiment 1 in that: the side wall of the free body containing pipe 2 is provided with a free body taking-out groove 10, the free body taking-out groove 10 is of an arc-shaped structure, the width of the free body taking-out groove 10 is larger than the pipe diameter of the free body containing pipe 2, the width of a notch of the free body taking-out groove 10 is larger than the width of the bottom of the free body taking-out groove 10, and the free body taking-out groove 10 is close to the other end of the free body containing pipe 2; when the free body taking-out device is used, after the free body enters the free body taking-out spring 3 and the free body containing tube 2, the free body containing tube 2 is taken out from the notch, and then the free body containing tube 2 is obliquely inverted, so that the free body automatically falls out from the free body taking-out groove 10;

examples

This embodiment differs from embodiment 1 in that: the side wall of the free body containing pipe 2 is provided with a rectangular through groove 11, the rectangular through groove 11 is of a rectangular structure, the width of the rectangular through groove 11 is larger than the pipe diameter of the free body containing pipe 2, the width of the notch of the rectangular through groove 11 is larger than the width of the bottom of the rectangular through groove 11, and the rectangular through groove 11 is close to the other end of the free body containing pipe 2; when the free body taking-out device is used, after the free body enters the free body taking-out spring 3 and the free body containing tube 2, the free body containing tube 2 is taken out from the notch, and then the free body containing tube 2 is obliquely inverted, so that the free body automatically falls out from the rectangular tube;

the edge of the spring support plate 4 is provided with an arc-shaped inclined section, and the design that the area of one surface, connected with the connecting support column, of the spring support plate 4 is smaller than that of the other surface can avoid and guide the free body when the free body approaches, so that the free body is easier to enter an extended gap of the free body taking-out spring 3 to be caught and removed;

the other end of the free body taking-out spring 3 passes through one end of the free body containing pipe 2 and extends into the free body containing pipe 2, so that the captured free body directly enters the free body containing pipe 2, and is convenient to take out together;

the design that the maximum diameter of the stay cord holding column 1 is larger than the pipe diameter of the free body containing pipe 2 can prevent the stay cord holding column 1 from completely extending into the free body containing pipe 2 and being incapable of being pulled out, so that the extractor cannot be used normally;

the other end of the stay cord holding column 1 is of an arc structure, so that the hand can conveniently hold and exert force, the free body taking-out spring 3 is stretched to enlarge a gap, and the free body can be conveniently locked in the stay cord holding column after entering;

the purpose that the free body is locked in the free body containing pipe 2, the free body is convenient to catch, and the free body is prevented from slipping and difficult to take out is achieved by driving the free body taking-out spring 3 to stretch to enlarge the gap through the spring pull rope 6, and loosening the pull rope holding column 1 to restore to the original position after the free body enters the free body taking-out spring 3.

It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, a fixed connection such as a hemmed connection, a rivet connection, a pin connection, an adhesive connection, a welded connection, a detachable connection such as a threaded connection, a snap connection, a hinge connection, or an integral connection, an electrical connection, or a direct connection, or an indirect connection via an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It should be further noted that, when the foregoing specific embodiments are described, only the differences from other embodiments are described for simplicity and clarity, but those skilled in the art will appreciate that the foregoing specific embodiments are also independent solutions.

Claims (10)

1. An intra-articular free body extractor is characterized in that: the novel free body taking out device comprises a stay cord holding column, a free body holding through pipe, a free body taking out spring, a spring supporting plate, a connecting supporting rod and a spring pulling rope, wherein a group of connecting supporting rods are arranged on the spring supporting plate, one end of each connecting supporting rod is connected with the spring supporting plate, the other end of each connecting supporting rod is connected with one end of the free body holding through pipe, the free body taking out spring is arranged on the spring supporting plate, one end of the free body taking out spring is connected with the spring supporting plate, one end of the spring pulling rope is connected with the other end of the free body taking out spring, and the other end of the spring pulling rope is connected with one end of the stay cord holding column.

2. The device for removing the free body from the joint cavity according to claim 1, wherein the side wall of the free body accommodating pipe is provided with a poking rod avoiding groove, the poking rod avoiding groove is a through groove, the length of the poking rod avoiding groove is consistent with that of the free body accommodating pipe, the free body poking rod is inserted into the free body accommodating pipe, the end part of the free body poking rod is provided with a handle, the handle is of a strip-shaped structure, and the handle is perpendicular to the free body poking rod.

3. The device for removing the free body from the joint cavity according to claim 1, wherein a group of arc through grooves are formed in the edge of the spring support plate, the arc through grooves are formed by a plurality of arc through grooves, the arc through grooves are distributed at equal intervals along the circumferential direction of the spring support plate, the groove bottom of the arc through grooves is of an arc structure, an arc inclined section is formed in the edge of the spring support plate, the area of one surface, which is connected with the connecting support rod, of the spring support plate is smaller than the area of the other surface, a group of connecting support rods are arranged on the spring support plate, one end of each connecting support rod is connected with the spring support plate, and the other end of each connecting support rod is connected with one end of the free body containing tube.

4. The joint cavity inner free body extractor as claimed in claim 1, wherein the free body receiving tube side wall is provided with a free body extracting groove, the free body extracting groove is of an arc structure, the width of the free body extracting groove is larger than the pipe diameter of the free body receiving tube, the width of the notch of the free body extracting groove is larger than the width of the groove bottom of the free body extracting groove, the free body extracting groove is close to the other end of the free body receiving tube, and the free body extracting groove is a through groove.

5. The free body extractor in a joint cavity according to claim 1, wherein the side wall of the free body holding tube is provided with a rectangular through groove, the rectangular through groove is of a rectangular structure, the width of the rectangular through groove is larger than the tube diameter of the free body holding tube, the width of the notch of the rectangular through groove is larger than the width of the bottom of the rectangular through groove, and the rectangular through groove is close to the other end of the free body holding tube.

6. The device for removing free bodies from joint cavities according to claim 1, wherein the edge of the spring support plate is provided with an arc-shaped inclined section, and the area of one surface of the spring support plate connected with the connecting support rod is smaller than the area of the other surface.

7. The joint cavity free body extractor of claim 1, wherein one group of said connecting support rods is composed of three connecting support rods, and three of said connecting support rods are equally distributed along the circumference of the free body container tube.

8. The free body extractor in the joint cavity according to claim 1, wherein the other end of the free body extracting spring extends into the free body holding tube through one end of the free body holding tube.

9. The device for removing free bodies from joint cavities according to claim 1, wherein the stay cord grip is of a cylindrical structure, the diameter of the stay cord grip is constant from the middle to the two ends, and then gradually decreases, and the maximum diameter of the stay cord grip is larger than the pipe diameter of the free body containing pipe.

10. The device for removing the free body from the joint cavity according to claim 9, wherein one end of the stay cord holding column is clamped in the other end of the free body holding tube, and the other end of the stay cord holding column is of an arc-shaped structure.

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