CN217414178U

CN217414178U - Fixed cutting device of biological tissue

Info

Publication number: CN217414178U
Application number: CN202220472357.XU
Authority: CN
Inventors: 张超
Original assignee: Hangzhou Hengzheng Yiyuan Biotechnology Co ltd
Current assignee: Hangzhou Hengzheng Yiyuan Biotechnology Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-09-13
Anticipated expiration: 2032-03-04

Abstract

The utility model provides a fixing and cutting device for biological tissues, which comprises a fixing mechanism and a cutting mechanism, wherein the fixing mechanism comprises a top cover and a supporting and fixing platform formed by enclosing along the bottom surface of the top cover, and the bottom of the supporting and fixing platform is used for fixing the biological tissues; the lower surface of the top cover and the supporting and fixing table are enclosed to form a half-open accommodating cavity; the cutting mechanism comprises a cutting knife and a control piece connected with the cutting knife, the cutting knife is arranged in the accommodating cavity and is controlled to move up and down in the accommodating cavity through the control piece; the control member passes through the top of the fixing mechanism. The utility model clamps biological tissue through the fixing mechanism, keeps a flat and unfolded state in the chemical treatment process, and improves the mechanical property of the biological tissue, thereby improving the qualification rate; meanwhile, the cutting mechanism can realize quick cutting, and the cutting precision is improved.

Description

Fixed cutting device of biological tissue

Technical Field

The utility model relates to a biological tissue handles technical field, concretely relates to fixed cutting device of biological tissue.

Background

The heart valve is the gate of heart blood circulation, once stenosis or incomplete closure occurs, the heart will have insufficient power or failure, and symptoms such as chest distress, asthma, general edema, weakness, chest pain and the like appear, which is a hidden danger endangering the life and the life quality of the old.

Conventional valve surgery is largely divided into valve replacement, in which a prosthetic valve mainly has both a mechanical valve and a biological valve, and valvuloplasty. The mechanical valve is made of carbon materials, metals and artificial fabrics, and after the mechanical valve is implanted, a patient needs to receive anticoagulation treatment for the whole life. Patients with contraindications to anticoagulation cannot use mechanical valves and there is a risk of fatal complications (such as bleeding and embolism) with anticoagulation. Biological valves are made from other animal-derived materials (e.g., bovine pericardium, porcine pericardium, etc.) plus some artificial stents and fabrics. This biological valve is biologically inactive, i.e., it is not metabolized in the body and does not self-renew, repair, and grow. After the biological valve is implanted into a human body for a period of time (generally about half a year), due to the characteristics of manufacturing materials, the surface of the biological valve can be covered by deposited fibrin, vascular endothelium and other tissues, the surface of the biological valve is not contacted with blood, and the blood coagulation reaction of the blood is prevented from being activated.

Generally, in order to increase the mechanical strength and reduce the immunogenicity of biomaterials, a pretreatment is required. Common treatment methods include weight pressing, rubber ring fixing and the like. The processing method adopting weight pressing is that firstly biological tissues are spread and spread in a container filled with processing solution, stainless steel strips or other weights are adopted to press the periphery of the pericardium, and after the processing is finished, the pericardium is cut into a required shape by using medical scissors or a scalpel and the like. The specific method for fixing the rubber ring comprises the following steps: spreading a pericardium on the upper round surface of a hollow cylindrical mold, adjusting the pericardium to be in a stretching state, naturally hanging redundant pericardium on the periphery, attaching the pericardium to the outer wall of the cylindrical mold, flatly fixing the pericardium on the mold by using a rubber band, placing the mold fixed with the pericardium into a corresponding container filled with treatment liquid for soaking treatment, taking out the pericardium from the solution after the treatment is finished, and cutting the fixed pericardium along the shape of the mold by using a scalpel.

The following problems to be solved exist in the process of manufacturing the biological valve:

1. biological tissues such as bovine pericardium or porcine pericardium are softer and thinner biological tissues, and are prone to fold or deform due to folding and curling, so that the mechanical properties of the biological tissues are affected.

2. The traditional cutting methods such as medical scissors, scalpels and the like have complex operation and low efficiency, and the cut shapes are not uniform and accurate, so burrs are easy to appear on the edges. The laser cutting method has the defects of complete cutting shape, high cost and poor precision and efficiency.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a fixed cutting device of biological tissue can the quick fixation biological tissue, cuts fast after soaking.

The embodiment of the utility model provides a fixed cutting device of biological tissue, include:

the fixing mechanism comprises a top cover and a supporting and fixing table formed by enclosing along the bottom surface of the top cover, and the bottom of the supporting and fixing table is used for fixing biological tissues; the lower surface of the top cover and the supporting and fixing table are enclosed to form a half-open accommodating cavity;

the cutting mechanism comprises a cutting knife and a control piece connected with the cutting knife, the cutting knife is arranged in the accommodating cavity, and the control piece controls the cutting knife to move up and down in the accommodating cavity; the control member passes through the top of the fixing mechanism.

Furthermore, the fixed cutting device also comprises a soaking container, and when the fixing mechanism is matched with the soaking container, the top cover covers the upper part of the soaking container, so that the top cover and the soaking container form a sealed soaking cavity; the accommodating cavity is arranged in the soaking cavity to soak the biological tissue.

Still further, the height of the supporting and fixing table is smaller than the height of the soaking container.

Furthermore, the side wall of the supporting and fixing table is provided with a plurality of filtering holes for the solution to flow into the accommodating cavity.

Furthermore, the bottom of the supporting and fixing platform is provided with a fixing groove, and when the biological tissue is installed at the bottom of the supporting and fixing platform, the fixer is sleeved on the biological tissue and embedded in the fixing groove.

Furthermore, the control part comprises a connecting rod and a plurality of supporting pieces arranged at the bottom of the connecting rod; one end of the supporting piece is connected with the inner wall of the cutting knife, and the other end of the supporting piece is connected with the connecting rod; a plurality of the support members are simultaneously connected to the bottom of the connecting rod.

Furthermore, a connecting hole for the connecting rod to pass through is formed in the top cover.

Furthermore, the upper end of the connecting rod is provided with a cover cap, and the upper surface of the cover cap is a plane.

Furthermore, the connecting rod is sleeved with an elastic piece, one end of the elastic piece abuts against the upper surface of the top cover, and the other end of the elastic piece abuts against the cap.

Further, the cutting blade has a circular cross section.

The fixed cutting device of biological tissue that this embodiment provided, its beneficial effect lies in:

(1) through the supporting and clamping action of the fixing mechanism, the biological tissue is kept in a completely flat and unfolded state in the chemical treatment process, the occurrence of bending, folding and other conditions in the fixing process is reduced, the mechanical property of the biological tissue is improved, and the utilization rate and the qualification rate of the biological tissue are improved;

(2) the matched cutting mechanism is used for cutting the biological tissue, so that the smoothness and the accuracy of the cutting edge are ensured, the operation efficiency is improved, and the utilization rate of raw materials is improved, so that the cost is reduced;

(3) the fixing mechanism and the cutting mechanism are matched with the soaking container, so that the whole treatment process is in a completely sealed state, and the safety of operators and the environment is ensured; after soaking, need not use other anchor clamps to press from both sides out, convenient and fast.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a fixed cutting device in an embodiment of the present invention.

Fig. 2 is an exploded view of the fixing mechanism and the cutting mechanism of fig. 1.

In the figure, 10-fixation mechanism, 11-top cover, 111-connection hole, 12-support fixation table, 121-fixation groove, 122-filtration hole, 20-cutting mechanism, 21-cutting knife, 22-control piece, 221-connection rod, 222-support piece, 223-cap, 224-elastic piece, 30-soaking container, 31-soaking cavity, 40-fixation device, 90-biological tissue.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a fixed cutting device for biological tissue 90, including a fixing mechanism 10 and a cutting mechanism 20, wherein the fixing mechanism 10 includes a top cover 11 and a supporting and fixing platform 12 enclosing along a bottom surface of the top cover 11, and a cross section of the supporting and fixing platform 12 is circular. The bottom of the supporting and fixing table 12 is used for fixing the biological tissue 90, so that the subsequent cutting step is convenient. The lower surface of the top cover 11 and the supporting and fixing table 12 enclose to form a half-opened accommodating cavity.

The cutting mechanism 20 comprises a cutting knife 21 and a control member 22 connected with the cutting knife 21, the cutting knife 21 is arranged in the accommodating cavity, and the control member 22 controls the cutting knife 21 to move up and down in the accommodating cavity so as to cut the biological tissue 90 fixed at the bottom of the supporting and fixing table 12. The control member 22 penetrates the top of the fixing mechanism 10, and a user can cut the internal biological tissue 90 from the outside of the fixing and cutting device conveniently and quickly. As an alternative embodiment of the present embodiment, the cutting blade 21 has a circular cross section, so that the biological tissue 90 to be cut has a circular cross section.

The fixed cutting device further comprises a soaking container 30, when the fixing mechanism 10 and the soaking container 30 are matched with each other, the top cover 11 covers the top of the top cover 11 soaking container 30, so that the top cover 11 and the soaking container 30 form a sealed soaking cavity 31, and the soaking cavity 31 is used for bearing a treatment solution for soaking the biological tissue 90.

Wherein a closed treatment of the biological tissue 90 is achieved to prevent the volatilized chemical agents from compromising the safety of the user. The containing cavity is arranged in the soaking cavity 31 to soak the biological tissue 90. It is worth mentioning that the size of the top cover 11 should be identical to the size of the infusion container 30.

Specifically, the bottom of the supporting and fixing table 12 is opened with a fixing groove 121 for the fixing device 40 to be installed. The fastener 40 may be an elastic securing cord, tie, or the like. After the biological tissue 90 is flatly fixed on the lower surface of the supporting and fixing table 12, the biological tissue 90 is fixed by the fixing device 40, so that the biological tissue 90 enters the soaking cavity 31 along with the fixing mechanism 10 for soaking.

Specifically, the sidewall of the supporting and fixing table 12 is opened with a plurality of filtering holes 122 for the solution to flow into the accommodating chamber. When the fixing mechanism 10 is placed in the soaking container 30 filled with the treatment solution, the treatment solution enters the bottom of the accommodating cavity through the filtering holes 122 of the supporting and fixing table 12, so that the upper and lower surfaces of the biological tissue 90 can be completely soaked in the treatment solution, and the biological tissue 90 is ensured to be thoroughly treated.

In particular, the height of the support platform 12 is less than the height of the soaking container 30, which ensures that the biological tissue 90 can be suspended in the device for treatment during use, and ensures that the periphery of the biological tissue 90 can be soaked in the treatment solution.

Specifically, the control member 22 includes a connecting rod 221 and a plurality of supporting members 222 disposed at the bottom of the connecting rod 221, one end of the supporting member 222 is connected to the inner wall of the cutting blade 21, and the other end is connected to the connecting rod 221. Preferably, a plurality of supporting members 222 are simultaneously connected to the bottom of the connecting rod 221 to maintain the stability of the control member 22 in use and prevent the control member 22 from shaking with the cutting blade 21 during use, which affects the cutting accuracy. The supporting member 222 may be a bar, or a plate, which is not limited in this embodiment. In this embodiment, 3 supporting members 222 are uniformly arranged along the connecting rod 221, and the structure is stable.

In an optional embodiment of the present invention, the connecting rod 221 and the supporting member 222 can be integrally formed, so as to effectively save the process steps and the process cost.

Specifically, the top cover 11 is provided with a connecting hole 111 for the connecting rod 221 to pass through, and in the actual use process, the connecting hole 111 can be matched with a sealing member with sealing performance such as a rubber ring.

Specifically, the upper end of the connecting rod 221 is provided with a cap 223, and the upper surface of the cap 223 is a plane, so that the biological tissue 90 can be installed on the inverted support fixing table 12 and the control member 22 can be pressed by the user. When the biological tissue 90 is mounted, the fixing mechanism 10 and the cutting mechanism 20 need to be inverted at the same time, so that the biological tissue 90 can be conveniently tiled and adjusted, and the upper surface of the cap 223 is a plane, so that the fixing mechanism 10 and the cutting mechanism 20 can be inverted stably.

Specifically, the connecting rod 221 is sleeved with an elastic member 224, and the elastic member 224 is preferably a spring. The elastic member 224 has one end abutting against the upper surface of the top cover 11 and one end abutting against the cap 223. When the user presses the cap 223, the cutting mechanism 20 cuts downward so that the elastic member 224 is compressed. After release, the elastic member 224 automatically resets the cutting blade 21.

The utility model discloses theory of operation and flow are as follows:

1. fixing the biological tissue 90: firstly, the supporting and fixing table 12 is placed upside down, the biological tissue 90 is flatly laid on the lower surface of the supporting and fixing table 12, the biological tissue 90 is adjusted to be in a stretching state, and the redundant biological tissue 90 around naturally hangs down and is attached to the outer wall of the supporting and fixing table 12. At this time, the biological tissue 90 can be fixed by the fixing device 40 (such as an elastic fixing string, etc.), so that the biological tissue 90 can be kept in the stretched state without easily generating wrinkles, thereby protecting the biological tissue 90.

2. Immersing in the treatment solution for chemical treatment: the control member 22 is lifted, the fixing mechanism 10 and the cutting mechanism 20 with the biological tissue 90 fixed thereon are put into the soaking container 30 for soaking, and the top cover 11 is matched with the soaking container 30 to realize sealing. The treatment solution permeates into the accommodation chamber through the filter holes 122 of the support fixture 12, and the upper and lower surfaces of the biological tissue 90 are completely immersed in the treatment solution.

3. Cutting the biological tissue 90: after the soaking is completed, the fixing mechanism 10 and the cutting mechanism 20 are lifted by the control member 22 and placed on the worktable, and the cap 223 is pressed downward, so that the cutting blade 21 cuts downward, thereby cutting the biological tissue 90.

The embodiment of the utility model provides a beneficial effect lies in:

1. through the supporting and clamping effects of the fixing mechanism 10, the biological tissue 90 is kept in a completely flat and unfolded state in the chemical treatment process, the occurrence of bending, folding and other conditions in the fixing process is reduced, the mechanical property of the biological tissue 90 is improved, and the utilization rate and the qualified rate of the biological tissue are improved.

2. The matched cutting mechanism 20 is used for cutting the biological tissue 90, so that the smoothness and the accuracy of the cutting edge are ensured, the operation efficiency is improved, and the utilization rate of raw materials is improved, so that the cost is reduced.

3. The fixing mechanism 10 and the cutting mechanism 20 are designed to be matched with the soaking container 30, so that the whole treatment process is in a completely sealed state, and the safety of operators and the environment is ensured. After soaking, need not use other anchor clamps to press from both sides out, convenient and fast.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixed cutting device for biological tissue, comprising:

the fixing mechanism (10) comprises a top cover (11) and a supporting and fixing table (12) formed by enclosing along the bottom surface of the top cover (11), and the bottom of the supporting and fixing table (12) is used for fixing biological tissues (90); the lower surface of the top cover (11) and the supporting and fixing table (12) enclose to form a half-opened accommodating cavity;

the cutting mechanism (20) comprises a cutting knife (21) and a control piece (22) connected with the cutting knife (21), the cutting knife (21) is arranged in the accommodating cavity, and the control piece (22) controls the cutting knife (21) to move up and down in the accommodating cavity; the control member (22) passes through the top of the fixing mechanism (10).

2. The fixed cutting device of biological tissue, according to claim 1, characterized in that it further comprises a soaking container (30), when the fixing mechanism (10) is engaged with the soaking container (30), the top cover (11) covers the upper part of the soaking container (30), so that the top cover (11) and the soaking container (30) form a sealed soaking cavity (31); the containing cavity is arranged in the soaking cavity (31) to soak the biological tissue (90).

3. The fixed cutting device of biological tissue according to claim 2, characterized in that the height of the supporting and fixing table (12) is less than the height of the infusion container (30).

4. The device for fixing and cutting biological tissues according to claim 1, characterized in that the side wall of the supporting and fixing platform (12) is provided with a plurality of filtering holes (122) for the solution to flow into the containing cavity.

5. The cutting device as claimed in claim 1 or 2, wherein a fixing groove (121) is formed at the bottom of the supporting and fixing platform (12), and when the biological tissue (90) is mounted at the bottom of the supporting and fixing platform (12), the fixing device (40) is sleeved on the biological tissue (90) and embedded in the fixing groove (121).

6. The fixed cutting device of biological tissue as claimed in claim 1, characterized in that said control member (22) comprises a connecting rod (221) and a plurality of supports (222) arranged at the bottom of said connecting rod (221); one end of the supporting piece (222) is connected with the inner wall of the cutting knife (21), and the other end of the supporting piece is connected with the connecting rod (221); the plurality of supporting pieces (222) are simultaneously connected with the bottom of the connecting rod (221).

7. The device for fixing and cutting biological tissue as claimed in claim 6, characterized in that the top cover (11) is provided with a connecting hole (111) for the connecting rod (221) to pass through.

8. The fixed cutting device of biological tissues, as claimed in claim 6, characterized in that the upper end of the connecting rod (221) is provided with a cap (223), the upper surface of the cap (223) is a plane.

9. The cutting device as claimed in claim 8, wherein an elastic member (224) is sleeved on the connecting rod (221), one end of the elastic member (224) abuts against the upper surface of the top cover (11), and the other end abuts against the cap (223).

10. The fixed cutting device of biological tissue as claimed in claim 1, characterized in that the cutting blade (21) is circular in cross section.