Locking tool for tensile strength test of medical tissue adhesive and method of use thereof

Abstract

The present invention discloses a locking tool for tensile strength test of medical tissue adhesive and a method of using the same, belonging to the technical field of medical product inspection. The locking tool comprises a tool body arranged in pairs, the tool body comprises a fixed plate, the back of the fixed plate is sequentially connected with a locking block and a clamping rod, the area of ​​the end face of the locking block is larger than the area of ​​the test face of the fixed block, and the locking block is threadedly matched with a locking sleeve; the position of the clamping rod corresponds to the center of the fixed plate and is perpendicular to the fixed plate. Positioning holes are arranged around the fixed plate, and each group of corresponding positioning holes is matched with a positioning pin at the same time. When in use, the test substrate is placed on the surface of the fixed plate, and the locking sleeve and the locking block are connected by threads to lock the test substrate to the surface of the fixed plate. The technical solution of the example of the present invention can conveniently lock the test substrate firmly, make the test operation more convenient, and improve the accuracy of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of medical product testing, in particular to a test of the tensile strength of a medical tissue adhesive, in particular to a locking tool for a tensile strength test of a medical tissue adhesive and a use method thereof. Background Art

[0002] Medical tissue adhesive is a new medical product that replaces suture needles. It has comprehensive functions such as adhesion, hemostasis, analgesia, anti-inflammatory, wound protection, and healing promotion. Compared with traditional suturing methods, medical adhesive bonding has the following advantages:

[0003] 1. Quickly stop bleeding, the bonding process is painless and does not require anesthesia.

[0004] 2. The wound heals linearly, without foreign objects such as needles and sutures irritating the skin, reducing the occurrence of inflammation, and the scar formed is very small, which has a good cosmetic effect.

[0005] 3. No need to remove stitches, which greatly shortens the time of medical treatment and saves medical expenses.

[0006] 4. The application of chemical medical adhesive to fix the patch and stop bleeding on the wound during tension-free repair of inguinal hernia has a good effect, does not increase the postoperative recurrence rate, can save operation time and relieve postoperative pain, and can also reduce the occurrence of postoperative chronic pain and local hematoma.

[0007] Because of the above advantages, medical adhesive bonding is particularly suitable for children and young women, especially wounds on the head and face. Many patients also choose medical adhesive bonding during caesarean section to avoid obvious scars.

[0008] Medical tissue adhesives act directly on the human body and need to undergo strict quality inspections before being put into clinical use. Among them, tensile strength is one of its important performance indicators.

[0009] The pharmaceutical industry standard YY / T0729.3-2009 "Test Method for Adhesive Properties of Tissue Adhesives Part 3: Tensile Strength" provides a brief test tool, the structure of which is shown in the attached figure of the specification. Figure 1 As shown, it includes a fixing plate 1 and a clamping rod 2. The fixing plate 1 is a square flat plate. One side of the fixing plate 1 is a bonding plane. The area of ​​the bonding plane is 2.5 cm×2.5 cm. The center of the other side of the fixing plate 1 is fixedly connected to the clamping rod 2. The clamping rod 2 is perpendicular to the fixing plate 1.

[0010] The usage status of the above tooling is as follows Figure 2 As shown ( Figure 2The test substrate is omitted in the figure), the test substrate (generally a fresh or frozen pig skin graft) is fixed on the bonding plane of the fixing plate 1 using ordinary strong glue (such as 502 glue), and the part of the test substrate that is beyond the bonding plane of the fixing plate 1 is trimmed off, leaving only a piece of equal size to the bonding plane, and the medical tissue adhesive to be tested is coated on the surface of the test substrate, and the test substrates on a relative set of test fixtures are bonded together using the medical tissue adhesive to be tested, and then the fixture with the test substrate is installed on the testing machine 3, and the testing machine 3 applies a pulling force to the test substrate on both sides through the fixture until the test substrates on the two fixtures are separated from the bonding point of the medical tissue adhesive, and the tensile strength of the medical tissue adhesive to be tested can be obtained according to the force applied by the testing machine when the two are separated.

[0011] This method still has the following shortcomings in actual operation:

[0012] 1. In the test method, the medical tissue adhesive to be tested is coated on the surface of the test substrate. After the test substrates on a relative set of test tools are bonded together using the medical tissue adhesive to be tested, a force of 1 to 2N needs to be applied until the medical tissue adhesive is solidified. This force is difficult to control in actual operation, which increases the difficulty of operation and the cumbersomeness of the steps.

[0013] 2. The pig skin graft of the test substrate has uneven thickness due to the characteristics of the pig skin itself. Therefore, the test fixture combined with the test substrate will often cause the clamp rod 2 to no longer be vertical. When the fixture with the test substrate is installed on the testing machine 3, since the clamp of the testing machine 3 is vertical, if the clamp rod 2 is not kept vertical, the clamp of the testing machine 3 will produce a bending force on the test fixture, affecting the accuracy of the test results, and may even cause cracks between the test fixture and the test substrate, or between the two test substrates, rendering the test results invalid.

[0014] 3. During the test, when the testing machine 3 applies tension, the positions where the two test substrates are bonded by the medical tissue adhesive and the positions where the test substrates and the test fixtures are bonded by ordinary strong glue are subjected to tension at the same time. Since the test fixtures are generally made of metal, the connection between the two test substrates is tighter than the connection between the metal and the test substrate. Therefore, the test substrate and the test fixture will crack first, resulting in the invalidation of the test results and the need for retesting, which increases the workload of the staff and reduces the inspection efficiency.

[0015] 4. In order to ensure a firm bond at the edge, during the test operation, the test substrate with an area larger than the bonding plane is generally first bonded to the fixed plate 1, and then the portion of the test substrate that exceeds the bonding plane at the edge is trimmed off. The operation of correcting the edge of the test substrate is relatively cumbersome and laborious, which not only increases the labor intensity but also reduces the test efficiency.

[0016] In addition, due to the above-mentioned deficiencies, the accuracy of the test results is reduced overall. When the deviation is large, it will not only lead to disputes between the inspection unit and the production unit, but also affect the normal market launch of medical supplies.

[0017] In summary, the current test fixture cannot meet the requirements of the tensile strength test of medical tissue adhesives well, and a new test fixture needs to be designed. Summary of the invention

[0018] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a locking tool for tensile strength testing of medical tissue adhesives and a method of using the same, which can conveniently lock the test substrate firmly, making the test operation more convenient and improving the accuracy of the test results.

[0019] The technical solution adopted by the present invention to solve the technical problem includes:

[0020] On the one hand, the present invention provides a locking tool for tensile strength testing of medical tissue adhesives, including tool bodies arranged in pairs, the tool bodies including a fixed plate, the front side of the fixed plate being a test surface, the back side of the fixed plate being connected with a locking block and a clamping rod in sequence, the area of ​​the end face of the locking block being larger than the area of ​​the test surface of the fixed block, the side surface of the locking block being provided with an external thread and the thread being matched with a locking sleeve; the position of the clamping rod corresponds to the center of the fixed plate and the clamping rod is perpendicular to the fixed plate.

[0021] Furthermore, the locking sleeve includes a sleeve, an inner side of the sleeve is provided with an internal thread, an end of the sleeve corresponding to the fixing plate is provided with an annular limiting plate, and the fixing plate extends from the center hole of the limiting plate.

[0022] Furthermore, one or more positioning holes are provided on the locking block around the fixed plate, and the positioning holes between a pair of tooling bodies used in conjunction are arranged corresponding to each other, each group of corresponding positioning holes is simultaneously matched with a positioning pin, and a through hole for the positioning pin to pass through is provided on the limiting plate of the locking sleeve.

[0023] Furthermore, each of the tooling bodies is provided with two positioning holes, and the two positioning holes are symmetrically distributed on both sides of the fixing plate.

[0024] Furthermore, the through hole is an arc-shaped long hole.

[0025] Furthermore, the outer side of the sleeve is provided with anti-slip grooves.

[0026] Furthermore, the gravity of each tooling body is 2N.

[0027] On the other hand, the present invention also provides a method for using the above-mentioned locking tool for tensile strength test of medical tissue adhesive, comprising:

[0028] The test substrate is placed on the surface of the fixed plate, and the area of ​​the test substrate is larger than the area of ​​the test surface of the fixed plate;

[0029] The locking sleeve and the locking block are connected by threads to lock the test substrate on the surface of the fixed plate;

[0030] Bonding a pair of test substrates of the tooling body together by means of a medical tissue adhesive to be tested;

[0031] leaving the tool body with the test substrate to stand until the medical tissue adhesive is cured;

[0032] Install the tooling body with the test substrate onto the testing machine;

[0033] The testing machine applies a tensile force until the test substrates on the two tooling bodies break from the bonding;

[0034] The tensile strength of the medical tissue adhesive to be tested is obtained according to the value of the tensile force at break.

[0035] Furthermore, corresponding positioning holes are provided on the locking blocks of each pair of tooling bodies. When the test substrates of a pair of tooling bodies are bonded together by the medical tissue adhesive to be tested, positioning pins are placed in the positioning holes so that the corresponding positioning holes are connected by the positioning pins.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The locking tooling for the tensile strength test of medical tissue adhesives of the present invention, through the cooperation of the locking block and the locking sleeve, locks the test substrate on the test surface of the fixing plate, which can specifically bring the following beneficial effects:

[0038] (1) It is not necessary to use other adhesives to glue the test substrate to the fixed plate, which is not only more convenient to operate, but also more convenient to remove the test substrate after the test is completed, and there will be no problem of adhesive adhering to the fixed plate and being difficult to clean; at the same time, the adhesive currently used to glue the test substrate to the fixed plate is generally 502 glue, which will have certain adverse effects on the health of the test personnel. The use of the locking tooling of the example of the present invention saves this step and eliminates the adverse effects of other adhesives on the health of the test personnel.

[0039] (2) Fixing the test substrate by locking is more secure than by bonding. Because the fixing plate is made of metal with a relatively smooth surface, it is difficult to bond it to the test substrate. It is easy for the fixing plate to crack before the two test substrates, resulting in test failure. The locking method solves this problem, greatly improving the accuracy and efficiency of the test and effectively avoiding the repetitive work caused by test failure.

[0040] (3) The test substrate is fixed by locking. The allowable size range of the test substrate is large, and its edge is located on the outside of the fixing plate to facilitate locking. There is no need to correct it to be completely consistent with the area of ​​the test surface of the fixing block, which greatly saves the workload of the test personnel, reduces the difficulty of operation, and improves the accuracy of the test results.

[0041] 2. The locking tooling for the tensile strength test of medical tissue adhesives in the example of the present invention has a locking sleeve in the form of a sleeve structure, with an annular limit plate provided at one end, and a fixing plate extending from the center hole of the limit plate. The structure is very simple, and the limit ring enables the locking sleeve to lock the test substrate firmly and reliably; the outer side of the sleeve is provided with anti-slip grooves to avoid slipping when tightening or loosening the locking sleeve, which is convenient for operation.

[0042] 3. In the locking tooling for the tensile strength test of medical tissue adhesives exemplified in the present invention, each pair of tooling bodies used in conjunction with each other are connected by locating pins. The coordination of the locating pins and the locating holes can ensure that the clamping rods of the tooling bodies are vertical, thereby avoiding the cracking phenomenon between the test substrate and the fixed plate caused by the clamping rods being installed on the testing machine in an inclined state due to the uneven thickness of the test substrate, thereby ensuring the smooth progress of the test.

[0043] 4. In the locking tooling for tensile strength test of medical tissue adhesives exemplified in the present invention, each tooling body is provided with two symmetrically distributed positioning holes, which not only simplifies the complexity of the structure and operation, but also ensures the balance, stability and reliability of the entire tooling; the hole on the locking sleeve for the positioning pin to pass through is an arc-shaped long hole, and the positioning holes within the range of the long hole can be exposed, ensuring that the positioning holes can be exposed to the outside, avoiding interference between the through hole and the positioning hole, and facilitating operation.

[0044] 5. The locking fixture for the tensile strength test of medical tissue adhesive in the example of the present invention has a weight of 2N for each fixture body, which is just the size of the force required for the medical tissue adhesive to cure. After the test substrate is bonded, the medical tissue adhesive can be cured in a natural state by leaving the test fixture stationary, which saves the step of applying force to cure the medical tissue adhesive in the current operation, making the operation simpler and ensuring accuracy.

[0045] 6. The method of using the locking tooling for the tensile strength test of medical tissue adhesives exemplified in the present invention omits the bonding step between the test substrate and the fixing plate, and adopts a locking connection, which is more convenient to operate, ensures the smooth progress of the test and the accuracy and effectiveness of the test results, and improves the test efficiency.

[0046] After actual tests, using the tooling and methods in the prior art, samples with a tensile strength of 30N to 40N were detected. Using the locking tooling of the example of the present invention, the tensile strength could reach 100N, the accuracy was greatly improved, and the results were more valuable for reference. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0048] For the sake of clarity, the test substrate is omitted in the following figures.

[0049] Figure 1 It is a schematic diagram of the structure of a tool for testing the tensile strength of a medical tissue adhesive in the prior art;

[0050] Figure 2 It is a schematic diagram of the structure of the tooling for tensile strength testing of medical tissue adhesives in the prior art installed on a testing machine;

[0051] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0052] Figure 4 This is a front view of the fixing plate, locking block and clamping plate of an embodiment of the present invention;

[0053] Figure 5 for Figure 4 Left view of

[0054] Figure 6 for Figure 4 Bottom view of

[0055] Figure 7 It is a cross-sectional view of a locking sleeve according to an embodiment of the present invention;

[0056] Figure 8 A bottom view of a locking sleeve according to an embodiment of the present invention;

[0057] Fig. 9 A bottom view of the overall structure of the tooling body according to an embodiment of the present invention;

[0058] Fig.10 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0059] Fig.11This is a schematic structural diagram of a locking tooling installed on a testing machine according to an embodiment of the present invention.

[0060] In the figure: 1 fixing plate, 2 clamping rod, 3 testing machine, 4 locking sleeve, 5 positioning pin, 6 locking block, 7 external thread, 8 positioning hole, 9 internal thread, 10 limiting plate, 11 through hole. DETAILED DESCRIPTION

[0061] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0062] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0063] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0064] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0067] Embodiment 1:

[0068] like Figure 3 As shown, this embodiment provides a locking tool for tensile strength test of medical tissue adhesive, including tool bodies arranged in pairs, such as Figure 4 , Figure 5 and Figure 6 As shown, the tooling body includes a fixing plate 1, the front side of the fixing plate 1 is a test surface, and the back side of the fixing plate 1 is connected with a locking block 6 and a clamping rod 2 in sequence, the area of ​​the end face of the locking block 6 is larger than the area of ​​the test surface of the fixing block 1, and the side of the locking block 6 is provided with an external thread 7 and the thread is matched with a locking sleeve 4; the position of the clamping rod 2 corresponds to the center of the fixing plate 1 and the clamping rod is perpendicular to the fixing plate 1.

[0069] like Figure 7 , Figure 8 As shown, the locking sleeve 4 includes a sleeve, the inner side of the sleeve is provided with an internal thread 9, and an annular limiting plate 10 is provided at one end of the sleeve corresponding to the fixing plate 1. Fig. 9 , Fig.10 As shown, the fixing plate 1 extends out from the central hole of the limiting plate 10. The outer side of the sleeve is provided with anti-slip grooves.

[0070] like Fig.11 As shown, the method of using this embodiment is as follows:

[0071] S1: The test substrate is placed on the surface of the fixed plate 1, and the area of ​​the test substrate is larger than the area of ​​the test surface of the fixed plate 1;

[0072] S2: The locking sleeve 4 and the locking block 6 are connected by threads to lock the test substrate on the surface of the fixing plate 1;

[0073] S3: bonding a pair of test substrates of the tooling body together by using the medical tissue adhesive to be tested;

[0074] S4: leaving the tool body with the test substrate to stand until the medical tissue adhesive is cured;

[0075] S5: Installing the tooling body with the test substrate onto the testing machine 3;

[0076] S6: The testing machine 3 applies a tensile force until the test substrates on the two tooling bodies break from the bonding position;

[0077] S7: Obtain the tensile strength of the medical tissue adhesive to be tested according to the value of the tensile force at break.

[0078] In specific implementation, the area of ​​the test substrate is between the area of ​​the test surface and the area of ​​the end face of the locking block 6, or is not larger than the area of ​​the end face of the locking block 6, so that the edge of the test substrate can be reliably locked between the locking sleeve 4 and the locking block 6, and the test substrate is prevented from being squeezed into the thread, thereby ensuring the firmness of the locking.

[0079] Embodiment 2:

[0080] The features of this embodiment that are the same as those of the first embodiment are not described in detail. The features of this embodiment that are different from the first embodiment are as follows: Figure 3-Figure 10 As shown, in this embodiment, positioning holes 8 are provided on the locking block 6 around the fixing plate 1, and the positioning holes 8 between a pair of tooling bodies used in conjunction with each other are arranged correspondingly, and each group of corresponding positioning holes 8 is simultaneously matched with a positioning pin 5, and a through hole 11 for the positioning pin 5 to pass through is provided on the limiting plate 10 of the locking sleeve 4.

[0081] Specifically, two positioning holes 8 are provided on each of the tooling bodies of this embodiment, and the two positioning holes 8 are symmetrically distributed on both sides of the fixing plate 1. In other embodiments, the number of positioning holes 8 and corresponding positioning pins 5 can be changed, and only one can be provided, or more can be provided. It can be understood that when only one positioning pin 5 is provided, it can also play a certain alignment role, but the effect and balance are inferior to that of providing multiple. When the number increases, although the alignment effect can be guaranteed, the operation becomes more complicated, and the structure appears redundant. It is a preferred embodiment to symmetrically provide two.

[0082] In order to facilitate the installation of the positioning pin 5, the through hole 11 is an arc-shaped long hole. The arc-shaped long hole has a large area, and within the area, the positioning hole 8 can ensure smooth installation of the positioning pin 5 at any position, which is convenient for operation and avoids interference between the through hole 11 and the positioning hole 8.

[0083] like Fig.11 As shown, the difference between this embodiment and the first embodiment when used is that:

[0084] In this embodiment, corresponding positioning holes 8 are provided on the locking blocks 6 of each pair of the tooling bodies. When the test substrates of a pair of tooling bodies are bonded together by the medical tissue adhesive to be tested, positioning pins 5 are placed in the positioning holes 8 so that the corresponding positioning holes 8 are connected by the positioning pins 5.

[0085] This embodiment is provided with a positioning pin 5, which can ensure that the clamping rod 2 of the tooling body is vertical, avoiding the cracking phenomenon between the test substrate and the fixed plate 1 caused by the clamping rod 2 being installed on the testing machine 3 in an inclined state due to the uneven thickness of the test substrate, thereby ensuring the smooth progress of the test.

[0086] In the above embodiment, the gravity of each of the tooling bodies is 2N, which is just the size of the force required for the medical tissue adhesive to cure. After the test substrate is bonded, the medical tissue adhesive can be cured in a natural state by leaving the test tooling stationary, thus saving the step of applying force to cure the medical tissue adhesive in the current operation, making the operation simpler and ensuring accuracy.

[0087] The various components of the tool body of the above embodiment can be made of aluminum alloy.

[0088] Test results statistics table:

[0089]

[0090]

[0091] From the above test results, it can be seen that the test results of the old tooling in the prior art can differ by 2 to 3 times compared with the new tooling in the example of the present invention, which greatly improves the accuracy and enables the test results to withstand the inspection of various methods and have more reference value.

[0092] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0093] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A locking tool for tensile strength testing of medical tissue adhesives, characterized in that: It comprises a tooling body arranged in pairs, the tooling body comprises a fixing plate, the front side of the fixing plate is a test surface, the back side of the fixing plate is connected with a locking block and a clamping rod in sequence, the area of ​​the end face of the locking block is larger than the area of ​​the test surface of the fixing block, the side of the locking block is provided with an external thread and the thread is matched with a locking sleeve; the position of the clamping rod corresponds to the center of the fixing plate and the clamping rod is perpendicular to the fixing plate; The locking sleeve comprises a sleeve, an inner side of the sleeve is provided with an internal thread, an end of the sleeve corresponding to the fixing plate is provided with an annular limiting plate, and the fixing plate extends from the central hole of the limiting plate; One or more positioning holes are arranged on the locking block around the fixing plate, and the positioning holes between a pair of tooling bodies used in conjunction are arranged correspondingly to each other, and each group of corresponding positioning holes is matched with a positioning pin at the same time, and a through hole for the positioning pin to pass through is arranged on the limiting plate of the locking sleeve; The gravity of each tooling body is set just to the magnitude of the force required for curing the medical tissue adhesive.

2. The locking tool for tensile strength test of medical tissue adhesive according to claim 1, characterized in that: Each tooling body is provided with two positioning holes, and the two positioning holes are symmetrically distributed on both sides of the fixing plate.

3. The locking tool for tensile strength test of medical tissue adhesive according to claim 1, characterized in that: The through hole is an arc-shaped long hole.

4. The locking tool for tensile strength test of medical tissue adhesive according to claim 1, characterized in that: The outer side of the sleeve is provided with anti-slip grooves.

5. A method for using the locking tool for tensile strength test of medical tissue adhesive according to any one of claims 1 to 4, characterized in that: include: The test substrate is placed on the surface of the fixed plate, and the area of ​​the test substrate is larger than the area of ​​the test surface of the fixed plate; The locking sleeve and the locking block are connected by threads to lock the test substrate on the surface of the fixed plate; Bonding a pair of test substrates of the tooling body together by means of a medical tissue adhesive to be tested; leaving the tool body with the test substrate to stand until the medical tissue adhesive is cured; Install the tooling body with the test substrate onto the testing machine; The testing machine applies a tensile force until the test substrates on the two tooling bodies break from the bonding; The tensile strength of the medical tissue adhesive to be tested is obtained according to the tensile force value at break.

6. The method of use according to claim 5, characterized in that: Each pair of locking blocks of the tooling bodies are provided with corresponding positioning holes. When the test substrates of a pair of tooling bodies are bonded together by the medical tissue adhesive to be tested, positioning pins are placed in the positioning holes so that the corresponding positioning holes are connected by the positioning pins.

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