In-vivo endosseous sampling knife

Abstract

The utility model discloses an in-vivo endosseous sampling knife, which relates to the technical field of osteotome, and comprises a handle main body, the middle part of the handle main body is fixedly connected with a main knife body, the cross section of the main knife body is U-shaped, the bottom of the main knife body is in an upward concave arc shape, sliding grooves are arranged on both sides inside the main knife body, a handle body groove is arranged inside the handle main body, and the handle main body is provided with a handle groove. The handle body groove is communicated with the sliding groove, an auxiliary blade is arranged in the handle body groove and the sliding groove, the tail end of the front side of the auxiliary blade is rotationally connected with a movable cutting edge through a rotating column, the middle of the movable cutting edge is fixedly connected with a fixing piece, and the left end of the fixing piece is fixedly connected with a cutting edge control rope. The device has the advantages that an endosseous sample can be accurately obtained, and excessive damage to surrounding tissues is avoided. It is helpful to ensure that the quality of the obtained sample is high, the possibility of wrong diagnosis is reduced, and additional large open surgery is not needed, so that the method has minimally invasive property.

Description

Technical Field

[0001] The utility model belongs to the field of bone knives, in particular to an in vivo endosteal sampling knife. Background Art

[0002] Endosteal sampling is a medical tool used to collect endosteal samples. Endosteal is a thin membrane inside bones, wrapped under the surface of bones, mainly composed of connective tissue and blood vessels. Endosteal sampling is a medical examination method used to obtain tissue samples of bone marrow or endosteal for pathological analysis or diagnosis.

[0003] In orthopedic animal laboratories, bone tissue (endosteum, cancellous bone, bone marrow) is often required for preservation, testing, etc. The following methods are often used to collect endosteal tissue:

[0004] 1. Use an osteotomy knife;

[0005] 2. Bone saw / bone chisel + knife;

[0006] The first is a common method that causes great damage to animal bones and surrounding tissues and is suitable for sampling animals with large bone mass.

[0007] The second method of collecting samples is only applicable to ex vivo bones, and usually involves operations on animal shareholders after separation, making it difficult for the animals to continue the experiment. It is not suitable for animal experiments that require continuous observation. Summary of the invention

[0008] The utility model aims to provide an in vivo endosteal sampling knife to solve the problem of serious damage to the endosteal membrane in existing animal experiments, especially small animal experiments, and to provide a sampling knife that is easy to operate and has little damage to animals.

[0009] The technical solution is as follows:

[0010] An in vivo endosteal sampling knife comprises a handle body, a main knife blade is fixedly connected to the middle part of the handle body, the main knife blade has a U-shaped cross section and an upwardly concave arc at the bottom, sliding grooves are provided on both sides of the main knife blade, a handle body groove is provided inside the handle body, the handle body groove is connected to the sliding groove, an auxiliary blade is slidably arranged inside the handle body groove and the sliding groove, the front end of the auxiliary blade is rotatably connected to a movable blade via a rotating column, a fixing piece is fixedly connected to the middle part of the movable blade, and a blade control rope is fixedly connected to the left end of the fixing piece.

[0011] In one of the embodiments, a circular groove is provided inside the handle body and at the bottom of the handle body groove, and the circular groove is connected to the inside of the handle body groove.

[0012] In one of the embodiments, hollow rings are fixedly connected to the left and right sides of the bottom of the auxiliary blade, and the left end of the blade control rope passes through the two hollow rings and is fixedly connected to the outer side of the handle body with a control rope handle.

[0013] In one of the embodiments, a friction ring is provided on the outer surface of the handle body.

[0014] In one of the embodiments, a pressing groove is provided on the outer surface of the handle body.

[0015] In one embodiment, scales are provided on both sides of the main knife blade.

[0016] In one embodiment, a rotation locking piece is rotatably connected to the rear side of the handle body.

[0017] In one embodiment, a main knife blade is disposed at the end of the main knife body.

[0018] In one embodiment, side blades are arranged on both sides of the end of the main knife body.

[0019] In one embodiment, the bottom curvature of the movable blade matches the bottom curvature of the main knife body.

[0020] The technical solution provided by the utility model has the following advantages and effects:

[0021] The arc shape of the bottom of the main blade fits the tibia and other parts of small animals. The side blades on both sides of the main blade peel off both sides of the endosteal membrane at the same time. The upper edge of the main blade is provided with a scale to facilitate the control of the endosteal cutting of a specific area. The pressing groove provided on the handle body is convenient for fingers to exert force. The auxiliary blade can be inserted from the handle body groove opened inside the handle body into the sliding groove along the inner side of the main blade to reach the main blade. A rotatable rotating locking piece is provided near the handle body groove of the handle body to fix the auxiliary blade. The auxiliary blade can be used for the final peeling of the endosteal membrane. This type of sampling knife can accurately obtain endosteal samples when sampling small animals without causing too much damage to surrounding tissues. This helps to ensure that the sample obtained is of high quality, reduces the possibility of misdiagnosis, and does not require additional large open surgery, so it is minimally invasive. This means that postoperative recovery is faster, which is beneficial for animal experiments that require continuous observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model without the auxiliary blade;

[0024] Figure 3It is a structural schematic diagram of another viewing angle of the embodiment of the utility model;

[0025] Figure 4 An exploded view of an auxiliary blade in an embodiment of the utility model;

[0026] Figure 5 for Figure 2 A local enlarged schematic diagram of the middle A;

[0027] Figure 6 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0028] Figure 7 Schematic diagram of the cross section of the main knife blade in the embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Handle body; 2. Pressing groove; 3. Friction ring; 4. Handle body groove; 5. Circular groove; 6. Main knife body; 601. Main knife blade; 602. Side blade; 7. Sliding groove; 8. Auxiliary blade; 9. Rotating column; 10. Movable blade; 11. Fixing part; 12. Blade control rope; 13. Hollow ring; 14. Control rope handle; 15. Rotating locking plate; 16. Scale. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0032] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0033] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0035] like Figure 1-6The in vivo endosteal sampling knife shown includes a handle body 1, a main knife body 6 is fixedly connected to the middle part of the handle body 1, the cross section of the main knife body 6 is U-shaped and the bottom is an upwardly concave arc shape, sliding grooves 7 are provided on both sides of the main knife body 6, a handle body groove 4 is provided inside the handle body 1, the handle body groove 4 is connected with the sliding groove 7, an auxiliary blade 8 is slidably arranged inside the handle body groove 4 and the sliding groove 7, and the auxiliary blade 8 can slide out to realize the detachable function; the front end of the auxiliary blade 8 is rotatably connected to a movable blade 10 through a rotating column 9, a fixing part 11 is fixedly connected to the middle part of the movable blade 10, and a blade control rope 12 is fixedly connected to the left end of the fixing part 11. Because the blade control rope 12 needs to withstand a large force, the material of the blade control rope 12 is preferably steel wire.

[0036] Please refer to Figure 6 As shown, a circular groove 5 is provided inside the handle body 1 and at the bottom of the handle body groove 4. The circular groove 5 is connected to the inside of the handle body groove 4 and is used for inserting the hollow ring 13 and placing the blade control rope 12.

[0037] Please refer to Figure 3 and Figure 4 As shown, hollow rings 13 are fixedly connected to the left and right sides of the bottom of the auxiliary blade 8 , and the left end of the blade control rope 12 passes through the two hollow rings 13 and is fixedly connected to the outer side of the handle body 1 with a control rope handle 14 .

[0038] Please refer to Figure 1 As shown, a friction ring 3 is provided on the outer surface of the handle body 1. The material of the friction ring 3 is preferably rubber, which is used to increase the friction between the medical gloves and the sampling knife to prevent the sampling knife from slipping from the hand. Alternatively, a pressing groove 2 is provided on the outer surface of the handle body 1. The shape of the pressing groove 2 is concave inward to facilitate the force exerted by the fingers.

[0039] Please refer to Figure 1 As shown, scales 16 are provided on both sides of the main knife blade 6. The setting of the scales 16 facilitates the control of the endosteal cutting of a specific area.

[0040] Please refer to Figure 3 As shown, the rear side of the handle body 1 is rotatably connected with a rotation locking piece 15, and the auxiliary blade 8 can be fixed by the rotation locking piece 15, which is very convenient for the installation and removal of the auxiliary blade 8.

[0041] Please refer to Figure 1 As shown, a main knife blade 601 is provided at the end of the main knife body 6, and the main knife blade 601 is used for cutting tissue, so that the main knife body 6 can smoothly enter the body.

[0042] Please refer to Figure 2As shown, side blades 602 are provided on both sides of the end of the main knife body 6, and the side blades 602 are used for stripping the endostium.

[0043] Please refer to Figure 1 and Figure 4 As shown, the bottom curvature of the movable blade 10 matches the bottom curvature of the main knife body 6 .

[0044] Working principle: When in use, first insert the auxiliary blade 8 and the movable blade 10 into the sliding groove 7 along the handle groove 4, so that the auxiliary blade 8 reaches the main blade 601, and then rotate the rotating locking piece 15 to fix the auxiliary blade 8 inside the handle body 1. When cutting the endosteal membrane, hold the control rope handle 14 and pull the blade control rope 12 to make the movable blade 10 rotate around the rotating column 9 to cut the endosteal membrane.

[0045] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. An in vivo endosteal sampling knife, characterized in that: It comprises a handle body, a main knife blade is fixedly connected to the middle part of the handle body, the cross section of the main knife blade is U-shaped and the bottom is an upwardly concave arc shape, sliding grooves are provided on both sides of the inside of the main knife blade, a handle body groove is provided inside the handle body, the handle body groove is connected with the sliding groove, an auxiliary blade is slidably arranged inside the handle body groove and the sliding groove, the front end of the auxiliary blade is rotatably connected to a movable blade through a rotating column, a fixing part is fixedly connected to the middle part of the movable blade, and a blade control rope is fixedly connected to the left end of the fixing part.

2. The in vivo endosteal sampling knife according to claim 1, characterized in that: A circular groove is provided inside the handle body and at the bottom of the handle body groove, and the circular groove is communicated with the inside of the handle body groove.

3. The in vivo endosteal sampling knife according to claim 2, characterized in that: The rear side of the handle body is rotatably connected with a rotation locking piece.

4. The in vivo endosteal sampling knife according to claim 1, characterized in that: The left and right sides of the bottom of the auxiliary blade are fixedly connected with hollow rings, and the left end of the blade control rope passes through the two hollow rings and is fixedly connected with a control rope handle on the outside of the handle body.

5. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: The outer surface of the handle body is provided with a friction ring.

6. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: A pressing groove is provided on the outer surface of the handle body.

7. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: Both sides of the main knife body are provided with scales.

8. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: A main knife blade is arranged at the end of the main knife body.

9. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: Side blades are arranged on both sides of the end of the main knife body.

10. The in vivo endosteal sampling knife according to any one of claims 1 to 4, characterized in that: The bottom curvature of the movable blade matches the bottom curvature of the main knife body.

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