Intraoperative frozen tissue fixing device

Abstract

The utility model provides an intraoperative frozen tissue fixing device which comprises a sample support and an enclosure capable of being opened and closed, the lower end of the enclosure is detachably connected with the sample support, a containing cavity for containing tissue is formed by the sample support and the enclosure, an opening is formed in the upper end of the containing cavity, and at least two fixing needles used for fixing the tissue are fixedly connected to the inner wall of the enclosure. All the fixing needles are located at the bottom of the fence, and tissue can be clamped between the fixing needles. According to the utility model, the fixing needle is arranged, so that tissues are effectively fixed and prevented from shifting, secondary addition of a frozen embedding medium can be avoided, and the timeliness of slicing is improved; by arranging the enclosure, the freezing embedding medium is ensured to be uniformly distributed, so that the hardened tissue is uniform in periphery and flat in height, and the slice quality is improved; the enclosure can be opened and closed, so that the enclosure can be conveniently separated from the hardened tissue, and the hardened tissue can be conveniently taken away from the sample support.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the medical auxiliary technical field, concretely relates to a intraoperative frozen tissue fixing device. BACKGROUND

[0002] In surgery, often need to carry out frozen section to the tissue to determine the lesion nature quickly. And the fixed quality of intraoperative frozen tissue directly influences the effect and diagnostic accuracy of subsequent section, and the section efficiency influences the timeliness of intraoperative frozen report.

[0003] In prior art, usually is simple to place the intraoperative tissue on the sample holder, such as the sample subtray disclosed in CN202420257681.9 or the sample tray disclosed in CN202320070743.0, directly add frozen embedding agent (such as OCT glue) embedding tissue on the sample holder, then with the sample holder together on the low temperature freezing table quick freezing, convenient for subsequent section. The way of simple to place the intraoperative tissue on the sample holder in the foregoing has the following technical problems: 1) the fixed tissue is not firm, and the tissue can be displaced in embedding agent or subsequent operation; 2) the embedding agent is unevenly distributed, leading to uneven and uneven after hardening of the tissue around, affecting the section quality. SUMMARY

[0004] The utility model aims at solving the technical problems in prior art, and the utility model aims at providing a intraoperative frozen tissue fixing device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a intraoperative frozen tissue fixing device, including sample holder, the lower end with the sample holder detachable connection can open and close the enclosure, the sample holder and the enclosure form the containing cavity of containing tissue with the upper end opening, and at least one fixed needle for fixing tissue is fixed on the inner wall of the enclosure.

[0006] The above technical scheme, by setting fixed needle, effectively fixed tissue, prevent tissue displacement, can fix the specified surface of tissue according to the requirement, and can avoid secondary adding frozen embedding agent, improve the timeliness of section;By setting the enclosure, ensure that the frozen embedding agent is evenly distributed, so that the hardening tissue is evenly distributed around, and the section quality is improved;The enclosure can be opened and closed, and can be easily separated from the hardened tissue, and the hardened tissue can be taken out from the sample holder.

[0007] In a preferred embodiment of the utility model, all fixed needles are located at the bottom of the enclosure, and the tissue can be clamped between the fixed needles.

[0008] The above technical scheme limits the movement of the tissue by the space between the fixed needles, thereby achieving the effect of fixation.

[0009] In a preferred embodiment of the utility model, the enclosure is formed by the bendable strip-shaped blocking strips, and the two ends of the strip-shaped blocking strips are connected through the connecting structure so that the enclosure can be opened and closed.

[0010] The enclosure is formed by the bendable strip-shaped blocking strips, and the enclosure can be adaptively adjusted according to the shape and size of the sample holder, so as to adapt to tissues of different shapes and sizes.

[0011] In a preferred embodiment of the utility model, the connecting structure is a fixed clamp composed of two vertically extending clamping arms, and the two clamping arms of the fixed clamp are located on the two sides to clamp and fix the two ends of the strip-shaped blocking strip.

[0012] The two ends of the strip-shaped blocking strip are fixed by the fixed clamp, and the fixed clamp is convenient to disassemble and assemble.

[0013] In a preferred embodiment of the utility model, the fixed clamp is an elastic clamp with an open lower end, and the two clamping arms of the fixed clamp are integrally formed or separately arranged and connected through elastic members.

[0014] In another preferred embodiment of the utility model, when the two clamping arms of the fixed clamp are integrally formed, the lower end of one of the clamping arms has an outwardly tilted guide portion.

[0015] The lower end of the fixed clamp is provided with the guide portion, and the lower end of the fixed clamp is in a trumpet shape, so that the fixed clamp is clamped outside the two ends of the strip-shaped blocking strip.

[0016] In another preferred embodiment of the utility model, the two ends of the strip-shaped blocking strip extend outward side by side or overlap.

[0017] In another preferred embodiment of the utility model, the outer wall of the sample holder has an outer edge extending radially outward, and the enclosure is provided with at least two clamping pieces capable of being clamped and fixed with the outer edge.

[0018] The lower end of the enclosure is connected with the sample holder by the outer edge and the clamping piece, and the structure is simple and convenient to operate.

[0019] In another preferred embodiment of the utility model, the clamping piece includes a clamping ear movably connected with the enclosure through a flexible section, and a protrusion fixedly connected with the inner side of the clamping ear, and the protrusion can be clamped and fixed on the lower surface of the outer edge by turning down the clamping ear.

[0020] In another preferred embodiment of the utility model, the clamping piece has an inwardly open clamping hook capable of clamping outside the outer edge.

[0021] Compared with the prior art, the preferred technical scheme of the utility model has the beneficial effects as follows:

[0022] 1) By setting the fixed needle, the tissue is effectively fixed, the ice freezing is prevented from moving, and the secondary addition of the frozen embedding agent is avoided, and the timeliness of the section is improved.

[0023] 2) By setting the fence, the uniform distribution of the frozen embedding agent is ensured, the hardened tissue is evenly distributed around, is high and low, and the section quality is improved; the uniform distribution of the embedding agent helps to fix the position of the embedding agent and the tissue, facilitates the printing of the section, more effectively prints a more complete and higher quality section, and is beneficial to the more accurate observation of the tissue cell morphology by the pathologist, and improves the accuracy of diagnosis.

[0024] 3) By setting the fence and the fixed needle, the operation quality of the operators with different experience levels can be relatively stable and high, the quality fluctuation caused by the experience difference is reduced, the intraoperative frozen quality control of the medical technology weak and the newly established technology immature department can be improved, and it is of great significance to improve the overall medical quality and ensure the safety of the operation.

[0025] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the utility model will become apparent and easy to understand from the description of the embodiments combined with the following drawings, in which:

[0027] Figure 1 is a structure schematic view of an intraoperative frozen tissue fixing device of an embodiment.

[0028] The reference signs in the drawings of the specification include: sample holder 1, fence 2, fixed needle 3, connecting structure (fixed clamp) 4, guide part 5, outer edge 6, clamping part 7, buckle ear 71, protrusion 72. DETAILED DESCRIPTION

[0029] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as a limitation on the utility model.

[0030] In the description of the utility model, it is understood that the terms "longitudinal", "transverse", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In the description of the utility model, unless otherwise specified and limited, it is necessary to explain that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between the two elements, it can be directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meaning of the above terms according to the specific situation.

[0032] The utility model provides a kind of intraoperative frozen tissue fixing device, as shown in Figure 1 In a preferred embodiment, the fixing device includes a sample holder 1, a closeable fence 2 detachably connected to the lower end of the sample holder 1, the sample holder 1 is a circular disc or a rectangular disc made of metal, the sample holder 1 and the fence 2 form an upper-end-opened containing cavity containing the tissue, at least two fixing needles 3 for fixing the tissue are fixed on the inner wall of the fence 2, all the fixing needles 3 are located at the bottom of the fence 2, the tissue can be clamped between the fixing needles 3, the movement of the tissue is limited by the space between the fixing needles 3, so as to achieve the effect of fixation. When multiple fixing needles are provided, the spacing between the fixing needles is not equal, which can be used to fix tissues of different sizes.

[0033] With such technical scheme, the fence 2 is enclosed on the sample holder 1, the lower end of the fence 2 is closely connected to the sample holder 1, the fence 2 is closed, the sample holder 1 and the fence 2 form an upper-end-opened containing cavity containing the tissue. After the intraoperative frozen tissue is taken, the tissue is placed on the sample holder 1 with forceps, the position of the tissue is fixed by the fixing needles 3, and then an appropriate amount of cryoembedding agent (such as OCT glue) is added. The fence 2 can stably fix around the tissue to prevent the cryoembedding agent from overflowing everywhere. After the tissue is hardened (hardened by freezing on a low-temperature freezing table), the fixation of the lower end of the fence 2 to the sample holder 1 is released, the fence 2 is opened, and the fence 2 is separated from the frozen tissue, so that the fence 2 can be conveniently taken off from the sample holder 1.

[0034] In the utility model, the fence 2 can be made of polytetrafluoroethylene (PTFE), or silicone rubber, or a metal material coated with a Teflon coating on the inner surface. After the OCT embedding agent is frozen and hardened, it has weak adhesion and is easy to peel off from the frozen tissue.

[0035] In the utility model, the fence 2 is surrounded by the bendable strip-shaped blocking strips, the two ends of the strip-shaped blocking strips are connected through the connecting structure 4 so that the fence 2 can be opened and closed, and after the strip-shaped blocking strips are surrounded to form the fence 2, the two ends of the strip-shaped blocking strips extend outward as shown in the figure, and of course the two ends of the strip-shaped blocking strips can be overlapped and then fixed through the connecting structure 4. Figure 1

[0036] The connecting structure 4 is a fixing clamp composed of two vertically extending clamping arms, and the two clamping arms of the fixing clamp 4 are located on the two sides to clamp and fix the two ends of the strip-shaped blocking strip therebetween. The fixing clamp 4 is made of an elastic material (such as plastic or spring steel), and the fixing clamp 4 is an elastic clamp with an open lower end. The two clamping arms of the fixing clamp 4 are integrally formed or separately arranged and then connected through an elastic member, such as the hairpin structure disclosed in CN201980048429.9, CN99109803.X or CN202080079626.X. When the two clamping arms of the fixing clamp 4 are integrally formed, the lower end of one of the clamping arms has an outwardly tilted guide portion 5, which facilitates clamping on the outside of the two ends of the strip-shaped blocking strip.

[0037] In the utility model, the outer wall of the sample holder 1 has an outer edge 6 extending radially outward, and the fence 2 is circumferentially spaced apart and has at least two clamping pieces 7 capable of being clamped and fixed with the outer edge 6. According to different specifications and sizes of the sample holder 1, different numbers of clamping pieces 7 can be arranged, such as two clamping pieces 7 when the sample holder 1 is small in size, and three or more clamping pieces 7 when the sample holder 1 is large in size. The fence 2 is fixed on the sample holder 1 to prevent the cold-embedding agent from overflowing. Preferably, the upper surface of the outer edge 6 is lower than the upper surface of the sample holder 1, forming a step, and the lower end of the fence 2 is placed on the outer edge 6 and surrounded outside the circumference of the step.

[0038] In one embodiment, the clamping piece 7 includes a clamping ear 71 movably connected to the outer wall of the lower end of the fence 2 through a flexible section, and a protrusion 72 fixed to the inner side of the clamping ear 71. By turning the clamping ear 71 downward, the protrusion 72 can be clamped and fixed on the lower surface of the outer edge 6 to achieve the clamping and fixing of the fence 2 and the sample holder 1 through multiple clamping pieces 7. The connection mode of the clamping piece 7 and the outer edge 6 of the sample holder 1 is the same as the connection mode of the existing technology in which the cover of the lunch box is connected to the lunch box through a buckle (such as disclosed in CN201610646466.8, CN201810352169.1 or CN201811453952.3), which is the existing technology and will not be described in detail here.

[0039] It should be noted that the clamping piece 7 can also adopt other structures, such as a clamping hook with an inward opening capable of being clamped into the outside of the outer edge 6. The clamping hook is made of plastic or spring steel and can be clamped tightly on the outside of the outer edge 6 to achieve the clamping and fixing of the fence 2 and the sample holder 1. ​

[0040] In the description of the present specification, the description referring to the terms "preferred embodiment", "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An intraoperative frozen tissue fixation device, comprising: The sample holder and the enclosing barrier form a containing cavity with an upper end opening for containing tissues, and at least two fixing needles for fixing the tissues are fixed on the inner wall of the enclosing barrier.

2. An intraoperative frozen tissue fixation device according to claim 1, wherein, All the fixing needles are located at the bottom of the enclosing barrier, and the tissues can be clamped between the fixing needles.

3. An intraoperative frozen tissue fixation device according to claim 1, wherein, The enclosing barrier is enclosed by a bendable strip-shaped barrier strip, and the two ends of the strip-shaped barrier strip are connected through a connecting structure so that the enclosing barrier can be opened and closed.

4. An intraoperative frozen tissue fixation device according to claim 3, wherein, The connecting structure is a fixed clamp composed of two vertically extending clamping arms, and the two clamping arms of the fixed clamp are located on both sides to clamp and fix the two ends of the strip-shaped barrier strip.

5. An intraoperative frozen tissue fixation device according to claim 4, wherein, The fixed clamp is an open-bottom elastic clamp, and the two clamping arms of the fixed clamp are integrally formed or separately arranged and then connected through an elastic member.

6. An intraoperative frozen tissue fixation device according to claim 5, wherein, When the two clamping arms of the fixed clamp are integrally formed, the lower end of one of the clamping arms has an outwardly tilted guide portion.

7. An intraoperative frozen tissue fixation device as defined in claim 4, wherein, The two ends of the strip-shaped barrier strip extend outward side by side or overlap.

8. An intraoperative frozen tissue fixation device according to any one of claims 1-7, wherein, The outer wall of the sample holder has an outwardly extending outer edge, and the enclosing barrier is provided with at least two clamping members which can be clamped and fixed with the outer edge.

9. An intraoperative frozen tissue fixation device according to claim 8, wherein, The clamping member includes a clamping ear which is movably connected to the enclosing barrier through a flexible section, and a protrusion which is fixed to the inner side of the clamping ear.

10. An intraoperative frozen tissue fixation device according to claim 8, wherein, By turning the clamping ear downward, the protrusion can be clamped and fixed on the lower surface of the outer edge. The clamping member has an inwardly open clamping hook which can be clamped outside the outer edge.

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