Needle-thread connection force testing device for medical suture with needle

Abstract

The utility model discloses a needle-thread connection force testing device for a medical suture with a needle, which belongs to the technical field of medical instruments and comprises a testing rod rotatably connected onto a support, a rod body of the testing rod positioned on one side of the support is slidably connected with a balancing weight, and a testing groove is formed in the top of the testing rod positioned on the other side of the support. A fixing plate is inserted into the testing groove, the fixing plate comprises a bottom plate and two clamping needle columns which are vertically arranged on the surface of the bottom plate in a bilateral symmetry mode, clamping needle faces are arranged on the sides, away from each other, of the two clamping needle columns, and the testing groove comprises a plate inserting groove matched with the bottom plate and two clamping needle openings which are in bilateral symmetry and correspond to the clamping needle faces. The two clamping needle openings are located on one side of the test groove and form an inverted trapezoidal structure from top to bottom. The needle clamping opening and the needle clamping column have the self-locking effect, the sewing needle is not prone to slipping off in the testing process, a needle-thread connection force testing stress point is located on the sewing needle, a sewing needle body is not prone to being damaged, two sewing needles can be tested at the same time, and the manual inspection time is shortened.

Description

A needle-based medical suture connection strength testing device Technical Field

[0001] This utility model relates to a needle-and-suture connection force testing device for medical sutures with needles, belonging to the field of medical device technology. Background Technology

[0002] Needle-to-thread bonding strength is an important performance indicator for sutures with suture needles. According to the surgical suture industry standard, the needle-to-thread bonding strength of the suture must meet the minimum bonding strength requirements.

[0003] Imported testing instruments are expensive, and existing testing methods can only test one suture needle at a time, which brings a huge workload to the testing. In addition, the existing needle-suture connection strength testing devices for medical sutures with needles all use a slot to hold the needle tail to test the needle-suture connection force of a single suture needle. Since the stress point is at the needle-suture connection point, there is a risk of damaging the suture. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a needle-and-suture connection force testing device for medical sutures with needles. It has the advantages of higher testing efficiency, simple structure, and low cost. Moreover, the testing force point is not at the needle-and-suture connection point, so there is no risk of damaging the suture.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] In a first aspect, this utility model provides a needle-and-suture connection force testing device, comprising a test rod rotatably connected to a support, a counterweight slidably connected to the rod body located on one side of the support, a test groove opened at the top of the test rod located on the other side of the support, a fixing plate inserted into the test groove, the fixing plate comprising a base plate and two symmetrically arranged pin-holding columns vertically installed on the surface of the base plate, a pin-holding surface provided on the side of the two pin-holding columns that are far apart from each other, the test groove comprising an insertion plate groove that matches the base plate and two symmetrically arranged pin-holding openings that correspond to the pin-holding surfaces, the two pin-holding openings being located on one side of the test groove and forming an inverted trapezoidal structure from top to bottom.

[0007] Furthermore, the acute angle between the two planes containing the card needle ports and the horizontal plane is not less than 70°.

[0008] Furthermore, the bracket includes a base, the side wall of the test rod has an insertion hole, and the base is rotatably connected to the test rod by means of a pin connecting the insertion hole.

[0009] Furthermore, the test rod near the counterweight has a groove, and the counterweight includes a movable block that is slidably sleeved on the groove, and the movable block is fixed to the groove by a limiting screw.

[0010] Furthermore, the two pin surfaces are parallel to the planes containing the two adjacent pin openings.

[0011] Furthermore, the maximum width of the two pin posts is between the maximum and minimum widths of the two pin openings.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0013] I. The needle-thread connection force testing device of this utility model can test two needles at the same time, improving inspection efficiency and reducing manual inspection time.

[0014] II. The needle-thread connection force testing device of this utility model is located on the needle, which makes it less likely to damage the suture thread.

[0015] III. The needle-thread connection force testing device for medical sutures with needles of this utility model has a self-locking effect in the needle-holding port and needle-holding post, making it difficult for the needle to slip off during the test. It is easy to operate, has a simple structure, and low manufacturing cost. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 is a front view of a needle-and-suture connection force testing device for medical sutures provided in an embodiment of the present invention;

[0018] Figure 2 is a top view of the fixing plate and testing rod of a needle-type medical suture connection force testing device provided in an embodiment of the present invention;

[0019] Figure 3 is an enlarged view of the test groove when using a needle-attached medical suture connection force testing device provided in an embodiment of this utility model.

[0020] In the diagram: 100, fixing plate; 110, base plate; 120, pin holder; 120a, pin holder one; 120b, pin holder two; 121, pin holder surface; 121a, pin holder surface one; 121b, pin holder surface two; 200, test rod; 210, test slot; 211, insert plate slot; 220, slide groove; 212, pin holder port; 212a, pin holder port one; 212b, pin holder port two; 230 300. Insertion hole; 310. Bracket; 320. Base; 400. Pin; 410. Counterweight; 420. Movable block; 500. Limiting screw; 510a. Needle 1; 510b. Needle 2; 511a. Straight segment 1; 511b. Straight segment 2; 512a. Curved segment 1; 512b. Curved segment 2; 520a. Thread body 1; 520b. Thread body 2. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0023] Example:

[0024] Referring to Figures 1-2, an embodiment of a needle-suture connection force testing device includes a fixing plate 100, a testing rod 200, a support 300, and a counterweight 400. The fixing plate 100 includes a base plate 110 and two protruding needle-holding posts 120, namely needle-holding post one 120a and needle-holding post two 120b; the testing rod 200 has a testing groove 210 at one end, a cut-out flat surface as a sliding groove 220 at the other end, and an insertion hole 230 in the middle. Pin post 120a and pin post 220b are perpendicular to the fixing plate 100 and are symmetrical from left to right. Pin post 120a and pin post 220b have two pin surfaces 121 on their left and right outer sides, namely pin surface 121a and pin surface 221b. Test slot 210 has a rectangular insertion slot 211 and two pin openings 212 symmetrical from left to right, namely pin opening 122a and pin opening 222b. The acute angle between the plane containing pin opening 122a and pin opening 212b and the horizontal plane is 80°. The plane containing pin surface 121a and pin opening 122a is parallel to each other. Bracket 300 has a base 310 and a pin 320. Counterweight 400 has a movable block 410 and a limiting screw 420.

[0025] Insert the pin 320 into the base 310 and the socket 230, connect the bracket 300 and the test rod 200 (see Figure 3). After inserting the fixing plate 100 into the insert plate slot 211, remove the thread 500. Gently lift the fixing plate 100 and insert the needle 510a into the pin holder 120a. The other side is handled similarly. Lower the fixing plate 100. Under the weight of the fixing plate 100, the pin holder opening 212a and the pin holder surface 121a clamp the straight section 511a of the needle 510a, and the curved section 512a of the needle 510a is placed close to the base plate 110 of the fixing plate 100. Move the movable block 410 to the appropriate position and fix the movable block 410 with the limit screw 420. Then, simultaneously pull the thread body 520a and the thread body 520b to keep the test rod horizontal for a short period of time. If neither needle 1 (510a) nor needle 2 (510b) separates from the suture bodies 520a and 520b, the test is qualified; otherwise, it is unqualified.

[0026] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A device for testing the bonding force of medical sutures with needles, characterized in that, The test rod (200) is rotatably connected to the bracket (300). The body of the test rod (200) located on one side of the bracket (300) is slidably connected to a counterweight (400). The test rod (200) located on the other side of the bracket (300) has a test groove (210) at its top. A fixing plate (100) is inserted into the test groove (210). The fixing plate (100) includes a base plate (110) and two left-right symmetrical pin pin columns (120) vertically installed on the surface of the base plate (110). The two pin pin columns (120) have a pin pin surface (121) on the side away from each other. The test groove (210) includes an insertion plate groove (211) that matches the base plate (110) and two left-right symmetrical pin pin openings (212) that correspond to the pin pin surface (121). The two pin pin openings (212) are located on one side of the test groove (210) and form an inverted trapezoidal structure from top to bottom.

2. The needle-thread connection force testing device for medical sutures with needles according to claim 1, characterized in that, The acute angle between the two planes containing the pinholes and the horizontal plane is not less than 70°.

3. The needle-thread connection force testing device for medical sutures with needles according to claim 1, characterized in that, The bracket (300) includes a base (310), and the side wall of the test rod (200) is provided with an insertion hole (230). The base (310) is rotatably connected to the test rod (200) by means of a pin (320) connecting to the insertion hole (230).

4. The needle-thread connection force testing device for medical sutures with needles according to claim 1, characterized in that, The test rod (200) near the counterweight (400) has a groove (220) on its body. The counterweight (400) includes a movable block (410) that is slidably sleeved on the groove (220), and the movable block (410) is fixed to the groove (220) by a limiting screw (420).

5. The needle-thread connection force testing device for medical sutures with needles according to claim 1, characterized in that, The two pin surfaces are parallel to the plane containing the two adjacent pin openings.

6. The needle-thread connection force testing device for medical sutures with needles according to claim 1, characterized in that, The maximum width of the two pin posts (120) is between the maximum and minimum widths of the two pin openings (212).

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