CN213588273U

CN213588273U - Measuring device for arthroscope

Info

Publication number: CN213588273U
Application number: CN202021310793.4U
Authority: CN
Inventors: 杨波
Original assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Current assignee: Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-07-02
Anticipated expiration: 2030-07-07

Abstract

The utility model relates to a measuring device for arthroscopy, which comprises a measuring component and a clamping component; the measuring component comprises a fixing part and a measuring part, the fixing part is of a nail-shaped structure, a nail cap of the nail-shaped structure is provided with a longitudinal section extending along the extending direction of a nail body, the measuring part is of a belt-shaped or linear structure, and one end of the measuring part is connected with the edge of the longitudinal section; the clamping assembly comprises a clamping part, an elastic part, a sleeving part and a pressing part; the clamping part comprises clamping claws and push rods, the push rods are connected with the clamping claws, at least two clamping claws are arranged, grooves capable of containing nail caps are formed in the clamping claws when the clamping claws are tightened, the push rods are of hollow structures capable of containing the measuring part in the push rods, and flanges are arranged on the outer sides of the push rods; the sleeve joint part is of a hollow structure, and the upper part of the sleeve joint part is provided with a clamping groove; the inner diameter of one end of the sleeve joint part for accommodating the clamping claw is gradually reduced; the push rod is arranged in the sleeving part; the elastic part is arranged between the clamping groove and the flange; the compressing part is sleeved outside the sleeving part. The utility model can accurately measure the cartilage defect range and accurately quantify the required repair materials in the cartilage repair operation.

Description

Measuring device for arthroscope

Technical Field

The utility model relates to the field of medical equipment, concretely relates to measuring device for arthroscope.

Background

The articular cartilage covers the adjacent bone surfaces in the joint, is smooth and elastic, and is an important structure for guaranteeing the joint movement function. However, since there is no nerve or blood vessel in cartilage, it is difficult to repair cartilage itself after cartilage injury. Traumatic and degenerative cartilage injuries are common knee joint diseases, and the incidence of cartilage injuries is higher and higher along with aging population, higher and higher levels of competitive sports and more participation of people in sports. The current surgical techniques for cartilage injury, which are commonly used clinically, include micro-fracture surgery, osteochondral transplantation or the application of special cartilage repair materials, etc., which have certain clinical effects, but the size of the repair material is determined by measuring the defect area of articular cartilage in the surgery. However, no such measuring device for arthroscopy is available in clinic at present, and the longitudinal and transverse diameters of the cartilage defect can only be roughly measured by using a calibrated rectangular probe (roughly estimating the length of the hook tooth, and sequentially measuring the length along the maximum diameter to be measured in a segmented mode by taking the length as the unit). Since the cartilage surfaces at different positions have different shapes and radians, even the rough estimation is difficult to complete, and the estimation possibly generates obvious measurement errors, which results in inaccurate estimation of defect ranges, waste of cartilage repair materials or over-small or over-large repair osteochondral masses, waste of precious donor resources, and increase of medical expenses or poor operation effect. Therefore, there is a need for a device that can accurately measure the extent of irregular shaped, sized and curved cartilage defects to solve the above problems.

Disclosure of Invention

An object of the utility model is to provide a measuring device for arthroscope can accurate measurement cartilage defect scope to select the cartilage repair material of appropriate size, avoid the wasting of resources, and can improve the operation effect.

The invention provides a measuring device for an arthroscope, which comprises a measuring assembly and a clamping assembly, wherein the measuring assembly comprises a measuring head and a clamping head;

the measuring assembly comprises a fixing part and a measuring part, the fixing part is of a nail-shaped structure, a nail cap of the nail-shaped structure is provided with a longitudinal section extending along the extension direction of a nail body, the measuring part is of a belt-shaped or linear structure, and one end of the measuring part is connected with the edge of the longitudinal section;

the clamping assembly comprises a clamping part, an elastic part, a sleeving part and a pressing part; the clamping part comprises clamping claws and push rods, the push rods are connected with the clamping claws, at least two clamping claws are arranged, grooves capable of containing the nail caps are formed in the clamping claws when the clamping claws are tightened, the push rods are of hollow structures, and flanges are arranged on the outer sides of the push rods; the sleeve joint part is of a hollow structure, and the upper part of the sleeve joint part is provided with a clamping groove; the push rod is arranged in the sleeving part; the inner diameter of one end of the sleeve joint part, which accommodates the clamping claw, is gradually reduced; the elastic part is arranged between the clamping groove and the flange; the compressing part is sleeved outside the sleeving part.

In the aforementioned measurement device for an arthroscope, the measurement unit preferably has a scale, and the minimum unit of the scale is 1 mm.

In the above-described measuring apparatus for an arthroscope, preferably, zero degrees of the scale are provided on the longitudinal section.

In the measuring device for arthroscopy described above, preferably, an open slot is provided between the clamping claws.

In the above measuring device for arthroscopy, preferably, the opening groove is a tapered opening groove.

In the above measuring device for arthroscopy, preferably, the outer surface of the pressing part is provided with grains.

The utility model discloses a measuring device for arthroscope is through fixing its fixed part at articular cartilage defect position, makes longitudinal section part and articular cartilage defect part edge align, the tensile soft measuring part of rethread centre gripping subassembly, make the laminating of soft measuring part and cartilage defect face measure the reading, can accurately measure the cartilage defect area of irregular shape, size and radian to solve the problem of the unable accurate measurement cartilage defect scope at present clinically, can also avoid the wasting of resources, and can improve the operation effect.

Drawings

FIG. 1 is a front view of a measurement assembly of the measurement device for an arthroscope of the present invention;

fig. 2 is a schematic view of a measuring assembly of the measuring device for arthroscopy of the present invention;

FIG. 3 is a front view of the clamping portion of the measuring device for arthroscopy of the present invention;

fig. 4 is a bottom view of the holding portion of the measuring device for arthroscopy of the present invention;

FIG. 5 is a cross-sectional view of the holding portion of the measuring device for arthroscopy of the present invention;

FIG. 6 is a front view of the clamping assembly of the arthroscopic measurement instrument of the present invention;

fig. 7 is a bottom view of the clamping assembly of the measuring device for arthroscopy of the present invention;

FIG. 8 is a top view of the clamping assembly of the arthroscopic measurement instrument of the present invention;

fig. 9 is a schematic view of a clamping assembly of the measuring device for arthroscopy of the present invention;

FIG. 10 is a cross-sectional view of the clamping assembly of the measurement device for an arthroscope of the present invention;

fig. 11 is a cross-sectional view of the measuring device for arthroscopy of the present invention.

Reference numerals:

the nail head comprises a fixing portion 1, a nail body 11, a nail cap 12, a measuring portion 2, a push rod 3, a flange 31, a clamping claw 4, an open groove 41, a groove 42, a sleeving portion 5, a clamping groove 51, a pressing portion 6, grains 61 and an elastic portion 7.

Detailed Description

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. The present invention will be described in detail with reference to the accompanying drawings and examples.

The terms "upper", "lower" and "lower" used in this application are used in the directions and positions shown in the drawings.

The utility model provides a measuring device for arthroscopy, which comprises a measuring component and a clamping component;

the measuring component comprises a fixing part 1 and a measuring part 2, the fixing part 1 is of a nail-shaped structure, and a nail cap 12 of the nail-shaped structure is provided with a longitudinal section along the extending direction of a nail body 11; preferably, the shape of the nail head 12 is approximately spherical, and the size of the nail head 12 is 3-5 mm; the length of the nail body 11 is 5-10 mm, and the diameter is 1 mm. The measuring part 2 is a strip-shaped or linear structure, and one end of the measuring part 2 is connected with the edge of the longitudinal section. Preferably, the measuring part 2 is a soft nylon, plastic or composite material, having a scale, the minimum unit of which is 1 mm. More preferably, the scale is arranged at the longitudinal section, so that the longitudinal section of the fixing part 1 is conveniently aligned with the edge of the articular cartilage defect part for fixing, at the moment, the measuring part 2 is stretched to the other side opposite to the articular cartilage defect part to be measured, and the scale value on the measuring part 2 corresponding to the edge of the other side is the reading to be measured.

The clamping assembly comprises a clamping part, an elastic part 7, a sleeving part 5 and a pressing part 6; the clamping part comprises clamping claws 4 and a push rod 3, the push rod 3 is connected with the clamping claws 4, at least two clamping claws 4 are arranged, a groove 42 capable of containing the nail cap 12 is formed in the clamping claws 4 when the clamping claws 4 are tightened, the push rod 3 is of a hollow structure, and a flange 31 is arranged on the outer side of the push rod 3; preferably, an open slot 41 is arranged between the clamping claws 4; preferably, the open slot 41 is a tapered open slot, and the open slot 41 can provide a larger opening space for the clamping jaw 4, so that the clamping jaw 4 can conveniently clamp the nail cap 12. The sleeve joint part 5 is of a hollow structure, and the upper part of the sleeve joint part is provided with a clamping groove 51; the push rod 3 is arranged in the sleeve joint part 5; the inner diameter that the socket joint portion 5 held gripper jaw one end diminishes to gripper jaw 4 opens gradually when push rod 3 released gripper jaw 4, closes gradually through the effect of the internal diameter wall that diminishes along with push rod 3 bounces gripper jaw 4 when not pushing out the operation, until pressing from both sides tight measuring unit's fixed part 1. The elastic part 7 is arranged between the clamping groove 51 and the flange 31; the pressing part 6 is sleeved outside the sleeving part 5; preferably, the outer surface of the pressing part 6 is provided with a texture 61, and the texture 61 can increase the friction force so that an operator can hold the device when using the device.

When the device is used, the measuring device which grasps the measuring component extends into a part to be measured, the clamping component is held, the nail cap 12 of the measuring component is fixed on the part to be measured by penetrating the nail body 11, the longitudinal section of the nail cap 12 is aligned with the edge of the articular cartilage defect part, then the tail end of the push rod 3 is pushed, the flange 31 of the push rod 3 presses the elastic part 7 into the clamping groove 51, the clamping claw 4 of which the other end is connected with the push rod 3 is pushed out of the sleeving part 5, the clamping claw 4 gradually opens, the groove 42 in the clamping claw 4 is opened along with the clamping claw 4, and the nail cap 12 is loosened; loosening the push rod 3, the elastic part 7 bounces, pushing the flange 31 of the push rod 3, driving the clamping claws 4 to retract into the sleeving part 5, moving the clamping assembly, placing the part to be measured to be attached to the measuring part 2 of the measuring assembly, reading after placing, and repeating the steps to continue measuring until the range of the articular cartilage defect part can be calculated.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A measuring device for an arthroscope is characterized by comprising a measuring component and a clamping component;

the clamping assembly comprises a clamping part, an elastic part, a sleeving part and a pressing part; the clamping part comprises clamping claws and push rods, the push rods are connected with the clamping claws, at least two clamping claws are arranged, grooves capable of containing the nail caps are formed in the clamping claws when the clamping claws are tightened, the push rods are of hollow structures, and flanges are arranged on the outer sides of the push rods; the sleeve joint part is of a hollow structure, and the upper part of the sleeve joint part is provided with a clamping groove; the push rod is arranged in the sleeve joint part, and the inner diameter of one end, accommodating the clamping claw, of the sleeve joint part is gradually reduced; the elastic part is arranged between the clamping groove and the flange; the compressing part is sleeved outside the sleeving part.

2. The arthroscopic measurement device according to claim 1, wherein the measurement section has a scale.

3. The arthroscopic measurement device according to claim 2 wherein zero degrees of the scale are provided at the longitudinal section.

4. The arthroscopic measurement device according to claim 1 wherein open slots are provided between the clamping jaws.

5. The arthroscopic measurement device according to claim 4 wherein the open slots are tapered open slots.

6. The arthroscopic measurement device according to claim 1 wherein the outer surface of the compression section is textured.