Ultrasonic knife durability testing mechanism

Abstract

The utility model discloses an ultrasonic knife durability testing mechanism, an ultrasonic knife comprises a knife bar assembly and a knife handle assembly connected with one end of the knife bar assembly, and a fixed grip and a movable grip are respectively arranged at the lower end of a body of the knife handle assembly. An excitation button used for exciting the cutter bar assembly is arranged on the body of the cutter handle assembly and located above the movable grip. The testing mechanism comprises a bottom substrate, a carrier plate mounted on the upper surface of one end of the bottom substrate and used for loading the cutter handle assembly, and a biomimetic object arranged on the upper surface of the other end of the bottom substrate and used for being matched with the end, away from the cutter handle assembly, of the cutter bar assembly. The ultrasonic knife durability testing mechanism can replace manual work to automatically achieve long-time repeated intermittent excitation operation so as to simulate a real use scene, and the testing precision and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to an ultrasonic scalpel durability testing mechanism, belonging to the field of medical device testing technology. Background Technology

[0002] As a type of medical device that comes into direct contact with a patient's tissues and organs, the lifespan of an ultrasonic scalpel is directly related to the safety and effectiveness of the surgical procedure. An ultrasonic scalpel with an insufficient lifespan may lead to problems such as tip breakage during surgery, causing serious medical accidents. A broken tip can cause collateral damage and remain inside the patient's body, making it difficult to remove and significantly increasing surgical risks. Therefore, to meet the requirement of repeated excitation over a long period, durability testing is necessary for the finished ultrasonic scalpel. This involves excitation at regular intervals to simulate the actual use of the scalpel, recording the total number of excitations from the start of excitation to the time the main unit reports an error or the tip breaks. This record serves as the criterion for determining whether the scalpel's lifespan meets the standards. Traditional manual excitation is inefficient, and the time span from the start of excitation to scalpel damage is usually long, resulting in high workload for testing personnel and low accuracy of test results. Utility Model Content

[0003] The purpose of this invention is to provide an ultrasonic scalpel durability testing mechanism that can automatically perform long-term, repeated, and intermittent excitation operations to simulate real-world usage scenarios, thereby improving the accuracy and efficiency of the test.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an ultrasonic scalpel durability testing mechanism, wherein the ultrasonic scalpel includes: a scalpel assembly and a handle assembly connected to one end of the scalpel assembly, wherein a fixed grip and a movable grip are respectively provided at the lower end of the body of the handle assembly, and an excitation button for exciting the scalpel assembly is provided on the body of the handle assembly and above the movable grip, and the testing mechanism includes: a base plate, a carrier plate mounted on the upper surface of one end of the base plate for mounting the handle assembly, and a biosimulation disposed on the upper surface of the other end of the base plate for engaging with the end of the scalpel assembly away from the handle assembly;

[0005] A support block is mounted on the base plate and on one side of the carrier plate. The electromagnetic body of a push-pull electromagnet, which is configured to cooperate with the excitation button of the tool holder assembly, is fixedly mounted on the support block. One end of the movable push rod of the push-pull electromagnet is connected to a movable iron core that can move axially within the electromagnetic body. The other end of the movable push rod extends towards the carrier plate to the outside of the electromagnetic body. One end of the guide rod of the push-pull electromagnet is connected to the movable iron core within the electromagnetic body. The other end of the guide rod extends away from the carrier plate to the outside of the electromagnetic body. The end of the guide rod away from the electromagnetic body has a radially outward flange. A return spring is fitted on the outside of the guide rod between the flange and the electromagnetic body. The end of the movable push rod away from the electromagnetic body is used to push and contact the excitation button of the tool holder assembly.

[0006] The following are further improvements to the above technical solution:

[0007] 1. In the above scheme, the support block is provided with at least one strip-shaped through hole extending in a direction away from the carrier plate.

[0008] 2. In the above scheme, the biosimulation is animal tissue, animal organ, or a mixed liquid bag.

[0009] 3. In the above solution, the movable grip of the knife handle assembly has a grip groove. The inner wall of the grip groove, the outer surface of the movable grip, and the upper surface of the body are all curved surfaces. At least three positioning blocks are movably mounted on the carrier plate for contacting and engaging with the lower surface of the knife handle assembly. These positioning blocks are respectively configured to correspond to the grip grooves on the body, the fixed grip, and the movable grip of the knife handle assembly. The corners of the triangularly arranged positioning blocks are set to be arc-shaped. One corner of one of the positioning blocks is embedded in the grip groove and in contact with the inner wall of the grip groove. The upper surface of the body and the outer surface of the fixed grip are each in contact with at least one positioning block.

[0010] 4. In the above scheme, a pressure block is installed on the upper surface of the positioning block, and a quick clamp is installed on the upper surface of at least one of the pressure blocks. One end of the clamping arm of the quick clamp can extend to the top of the tool holder assembly and is equipped with a chuck. An elastic pad for contacting and engaging with the upper surface of the tool holder assembly is attached to the surface of the chuck opposite to the clamping arm.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] 1. This utility model relates to an ultrasonic scalpel durability testing mechanism. A support block is mounted on a base plate and on one side of the carrier plate. A push-pull electromagnet, whose electromagnetic body is designed to cooperate with the excitation button of the scalpel assembly, is fixedly mounted on the support block. One end of the movable push rod of the push-pull electromagnet is connected to a movable iron core within the electromagnetic body that can move axially. The other end of the movable push rod extends towards the carrier plate to the outside of the electromagnetic body. One end of the guide rod of the push-pull electromagnet is connected to the movable iron core within the electromagnetic body. The other end of the guide rod extends away from the carrier plate to the outside of the electromagnetic body. The end of the guide rod away from the electromagnetic body has a radially outward-facing flange. A return spring is fitted on the outside of the guide rod between the flange and the electromagnetic body. The end of the movable push rod away from the electromagnetic body is used to push against the excitation button of the scalpel assembly. This mechanism can automatically perform long-term, repetitive, intermittent excitation operations to simulate real-world usage scenarios, improving testing accuracy and efficiency.

[0013] 2. The ultrasonic scalpel durability testing mechanism of this utility model has at least three positioning blocks movably mounted on a carrier plate that contacts and engages with the lower surface of the scalpel handle assembly. These positioning blocks correspond to the gripping grooves on the main body, fixed grip, and movable grip of the scalpel handle assembly, respectively. The corners of the triangularly arranged positioning blocks are arc-shaped, with one corner of one positioning block embedded in the gripping groove and in close contact with the inner wall of the gripping groove. The upper surface of the main body and the outer surface of the fixed grip each have close contact with at least one positioning block, enabling rapid loading, unloading, and clamping of the scalpel handle assembly. To ensure the positional accuracy of the tool holder assembly during testing and avoid interference with test results due to positional deviation, a pressure block is further installed on the upper surface of at least one positioning block, and a quick clamp is installed on the upper surface of at least one pressure block. One end of the clamping arm of the quick clamp can extend to the top of the tool holder assembly and is equipped with a chuck. An elastic washer for contacting and engaging with the upper surface of the tool holder assembly is attached to the surface of the chuck opposite to the clamping arm, which increases the restriction on the degree of freedom of the tool holder in the vertical direction and further improves the positional accuracy of the tool holder during testing to ensure the accuracy of the test. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the ultrasonic scalpel structure in the ultrasonic scalpel durability testing mechanism of this utility model;

[0015] Appendix Figure 2 This is a schematic diagram of the ultrasonic scalpel durability testing mechanism of this utility model;

[0016] Appendix Figure 3 This is a schematic diagram of the push-pull electromagnet in this utility model;

[0017] Appendix Figure 4 This is a partial structural diagram of the present invention under test conditions.

[0018] In the above figures: 100, handle assembly; 101, body; 102, fixed grip; 103, movable grip; 104, grip groove; 105, activation button; 200, tool holder assembly; 300, biosimulation; 1, carrier plate; 2, positioning block; 3, pressure block; 41, first strip-shaped mounting hole; 42, second strip-shaped mounting hole; 5, base plate; 6, quick clamp; 61, clamping arm; 62, chuck; 63, elastic pad; 7, support block; 71, strip-shaped through hole; 81, electromagnetic body; 82, movable push rod; 83, guide rod; 84, flange; 85, return spring. Detailed Implementation

[0019] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0020] Example 1: An ultrasonic scalpel durability testing mechanism, the ultrasonic scalpel including: a scalpel assembly 200 and a handle assembly 100 connected to one end of the scalpel assembly 200, the lower end of the body 101 of the handle assembly 100 is respectively provided with a fixed handle 102 and a movable handle 103, and an excitation button 105 for activating the scalpel assembly 200 is provided on the body 101 of the handle assembly 100 and above the movable handle 103. The testing mechanism includes: a base plate 5, a carrier plate 1 mounted on the upper surface of one end of the base plate 5 for loading the handle assembly 100, and a biosimulation 300 disposed on the upper surface of the other end of the base plate 5 for engaging with the end of the scalpel assembly 200 away from the handle assembly 100.

[0021] A support block 7 is installed on the base plate 5 and on one side of the carrier plate 1. The electromagnetic body 81 of a push-pull electromagnet, which is configured to cooperate with the activation button 105 of the tool holder assembly 200, is fixedly installed on the support block 7. One end of the movable push rod 82 of the push-pull electromagnet is connected to the movable iron core that can move axially inside the electromagnetic body 81. The other end of the movable push rod 82 extends towards the carrier plate 1 to the outside of the electromagnetic body 81. One end of the guide rod 83 of the push-pull electromagnet is connected to the movable iron core inside the electromagnetic body 81. The other end of the guide rod 83 extends away from the carrier plate 1 to the outside of the electromagnetic body 81. The end of the guide rod 83 away from the electromagnetic body 81 has a radially outward flange 84. A return spring 85 is fitted on the outside of the guide rod 83 and between the flange 84 and the electromagnetic body 81. The end of the movable push rod 82 away from the electromagnetic body 81 is used to push and contact the activation button 105 of the tool holder assembly 200.

[0022] The aforementioned biomimetic 300 is animal tissue.

[0023] The movable grip 103 of the aforementioned knife handle assembly 100 has a grip groove 104. The inner wall of the grip groove 104, the outer surface of the movable grip 103, and the upper surface of the body 101 are all curved surfaces. At least three positioning blocks 2 are movably mounted on the carrier plate 1, which is used to contact and cooperate with the lower surface of the knife handle assembly 100. These positioning blocks 2 are respectively arranged to correspond to the grip grooves 104 on the body 101, the fixed grip 102, and the movable grip 103 of the knife handle assembly 100. The corners of the triangularly arranged positioning blocks 2 are set to be arc-shaped. One corner of one of the positioning blocks 2 is embedded in the grip groove 104 and is in close contact with the inner wall of the grip groove 104. The upper surface of the body 101 and the outer surface of the fixed grip 102 are each in close contact with at least one positioning block 2.

[0024] A pressure block 3 is mounted on the upper surface of the positioning block 2, and a quick clamp 6 is mounted on the upper surface of at least one of the pressure blocks 3. One end of the clamping arm 61 of the quick clamp 6 can extend above the tool holder assembly 100 and is equipped with a chuck 62. An elastic pad 63 for contacting and engaging with the upper surface of the tool holder assembly 100 is attached to the surface of the chuck 62 opposite to the clamping arm 61. The quick clamp 6 is a manual quick clamp. The elastic pad 63 is a silicone pad.

[0025] Example 2: An ultrasonic scalpel durability testing mechanism, the ultrasonic scalpel including: a scalpel assembly 200 and a handle assembly 100 connected to one end of the scalpel assembly 200, the lower end of the body 101 of the handle assembly 100 is respectively provided with a fixed handle 102 and a movable handle 103, and an excitation button 105 for activating the scalpel assembly 200 is provided on the body 101 of the handle assembly 100 and above the movable handle 103. The testing mechanism includes: a base plate 5, a carrier plate 1 mounted on the upper surface of one end of the base plate 5 for loading the handle assembly 100, and a biosimulation 300 disposed on the upper surface of the other end of the base plate 5 for engaging with the end of the scalpel assembly 200 away from the handle assembly 100.

[0026] A support block 7 is installed on the base plate 5 and on one side of the carrier plate 1. The electromagnetic body 81 of a push-pull electromagnet, which is configured to cooperate with the activation button 105 of the tool holder assembly 200, is fixedly installed on the support block 7. One end of the movable push rod 82 of the push-pull electromagnet is connected to the movable iron core that can move axially inside the electromagnetic body 81. The other end of the movable push rod 82 extends towards the carrier plate 1 to the outside of the electromagnetic body 81. One end of the guide rod 83 of the push-pull electromagnet is connected to the movable iron core inside the electromagnetic body 81. The other end of the guide rod 83 extends away from the carrier plate 1 to the outside of the electromagnetic body 81. The end of the guide rod 83 away from the electromagnetic body 81 has a radially outward flange 84. A return spring 85 is fitted on the outside of the guide rod 83 and between the flange 84 and the electromagnetic body 81. The end of the movable push rod 82 away from the electromagnetic body 81 is used to push and contact the activation button 105 of the tool holder assembly 200.

[0027] The aforementioned support block 7 has at least one strip-shaped through hole 71 extending in a direction away from the carrier plate 1.

[0028] The aforementioned biosimulation 300 is a mixing liquid bag.

[0029] The movable grip 103 of the aforementioned knife handle assembly 100 has a grip groove 104. The inner wall of the grip groove 104, the outer surface of the movable grip 103, and the upper surface of the body 101 are all curved surfaces. At least three positioning blocks 2 are movably mounted on the carrier plate 1, which is used to contact and cooperate with the lower surface of the knife handle assembly 100. These positioning blocks 2 are respectively arranged to correspond to the grip grooves 104 on the body 101, the fixed grip 102, and the movable grip 103 of the knife handle assembly 100. The corners of the triangularly arranged positioning blocks 2 are set to be arc-shaped. One corner of one of the positioning blocks 2 is embedded in the grip groove 104 and is in close contact with the inner wall of the grip groove 104. The upper surface of the body 101 and the outer surface of the fixed grip 102 are each in close contact with at least one positioning block 2.

[0030] The aforementioned positioning block 2 has a first strip-shaped mounting hole 41 extending along its length direction; each positioning block 2 has a pressure block 3 on its upper surface, and the pressure block 3 has a second strip-shaped mounting hole 42 that intersects with the first strip-shaped mounting hole 41; the positioning block 2 is an acute-angled triangular positioning block.

[0031] Working principle:

[0032] When using it, first place the handle assembly of the ultrasonic scalpel to be tested on the carrier plate, so that the lower surface of the handle assembly is in contact with the upper surface of the carrier plate.

[0033] Then, embed one positioning block into the grip groove, place one positioning block on the side of the fixed grip away from the movable grip, and place one positioning block on the outer side of the upper end of the tool handle assembly. Then, lock each positioning block onto the carrier plate by bolts that pass through the second strip mounting hole on the pressure block and the first strip mounting hole on the positioning block and are threaded onto the carrier plate.

[0034] Before locking each positioning block, the position of each positioning block can be adjusted along the length of the first and second strip mounting holes respectively, so that the outer side of the positioning block is more closely fitted with the inner wall of the grip groove, the upper surface of the tool handle assembly body or the outer surface of the fixed grip, thereby restricting the degree of freedom of movement and rotation of the tool handle assembly in the horizontal direction.

[0035] After achieving horizontal positioning, the quick clamp is switched from non-clamping to clamping, causing one end of its clamping arm to rotate above the tool holder assembly and the elastic pad on the chuck to press against the upper surface of the tool holder assembly. This restricts the vertical jitter of the tool holder assembly, enabling omnidirectional positioning of the tool holder assembly and improving the stability of the tool holder assembly positioning for subsequent testing operations.

[0036] Next, by adjusting the position of the support block, the distance between the movable push rod of the push-pull electromagnet and the activation button on the tool holder assembly is adjusted so that when the movable push rod extends and contacts the activation button, the force on the activation button meets the activation requirements.

[0037] Next, a biological simulation (such as an animal small intestine) is placed at the end of the blade holder assembly away from the handle assembly, so that the environment that the blade holder assembly comes into contact with during the test is close to the environment of the real use scenario;

[0038] Finally, by controlling the on and off of the electromagnetic body, the ultrasonic scalpel is stimulated by repeatedly and intermittently operating the excitation button in a real-world scenario until it is damaged.

[0039] The ultrasonic scalpel durability testing mechanism described above can replace manual operation to automatically perform long-term, intermittent excitation operations to simulate real-world usage scenarios, thereby improving the accuracy and efficiency of the test.

[0040] Furthermore, it enables rapid loading, unloading, and clamping of the tool holder assembly, ensuring the positional accuracy of the tool holder assembly during testing and avoiding interference with test results due to its positional deviation. Additionally, a pressure block is mounted on the upper surface of at least one positioning block, and a quick-release clamp is mounted on the upper surface of at least one pressure block. One end of the quick-release clamp's arm extends above the tool holder assembly and is fitted with a chuck. An elastic pad for contacting and engaging with the upper surface of the tool holder assembly is attached to the surface of the chuck opposite to the arm, increasing the restriction on the tool holder's degree of freedom in the vertical direction and further improving the positional accuracy of the tool holder during testing to ensure test accuracy.

[0041] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An ultrasonic blade durability testing mechanism, the ultrasonic blade comprising: The test mechanism comprises: a blade assembly (200) and a handle assembly (100) connected to one end of the blade assembly (200). The handle assembly (100) has a fixed grip (102) and a movable grip (103) respectively provided at the lower end of its body (101). The handle assembly (100) has an activation button (105) for activating the blade assembly (200) on its body (101) and above the movable grip (103). The test mechanism comprises: a base plate (5), a carrier plate (1) mounted on the upper surface of one end of the base plate (5) for loading the handle assembly (100), and a biosimulation (300) disposed on the upper surface of the other end of the base plate (5) for engaging with the end of the blade assembly (200) away from the handle assembly (100). A support block (7) is installed on the base plate (5) and on one side of the carrier plate (1). The electromagnetic body (81) of a push-pull electromagnet, which is configured to cooperate with the activation button (105) of the tool holder assembly (200), is fixedly installed on the support block (7). One end of the movable push rod (82) of the push-pull electromagnet is connected to the movable iron core that can move axially inside the electromagnetic body (81). The other end of the movable push rod (82) extends towards the carrier plate (1) to the outside of the electromagnetic body (81). One end of the guide rod (83) of the push-pull electromagnet is connected to the electric... The moving iron core inside the magnetic body (81) is connected, and the other end of the guide rod (83) extends away from the carrier plate (1) to the outside of the electromagnetic body (81). The end of the guide rod (83) away from the electromagnetic body (81) has a flange (84) that extends radially outward. A reset spring (85) is fitted on the outside of the guide rod (83) and between the flange (84) and the electromagnetic body (81). The end of the movable push rod (82) away from the electromagnetic body (81) is used to push and contact the trigger button (105) of the tool holder assembly (200).

2. The ultrasonic blade durability test mechanism of claim 1, wherein: The support block (7) has at least one strip-shaped through hole (71) extending in a direction away from the carrier plate (1).

3. The ultrasonic blade durability testing mechanism of claim 1, wherein: The biosimulation (300) used to simulate the internal environment of the human body is an animal tissue, animal organ, or a mixed fluid bag.

4. The ultrasonic blade durability testing mechanism of claim 1, wherein: The movable grip (103) of the handle assembly (100) has a grip groove (104). The inner wall of the grip groove (104), the outer surface of the movable grip (103), and the upper surface of the body (101) are all curved surfaces. At least three positioning blocks (2) are movably installed on the carrier plate (1) for contacting and cooperating with the lower surface of the handle assembly (100). These positioning blocks (2) are respectively arranged to correspond to the grip grooves (104) on the body (101), the fixed grip (102), and the movable grip (103) of the handle assembly (100). The corners of the positioning blocks (2) arranged in a triangle are set to be arc-shaped. One corner of one of the positioning blocks (2) is embedded in the grip groove (104) and is in contact with the inner wall of the grip groove (104). The upper surface of the body (101) and the outer surface of the fixed grip (102) are each in contact with at least one positioning block (2).

5. The ultrasonic blade durability testing mechanism of claim 4, wherein: At least one of the positioning blocks (2) has a pressure block (3) mounted on its upper surface, and at least one of the pressure blocks (3) has a quick clamp (6) mounted on its upper surface. One end of the clamping arm (61) of the quick clamp (6) can extend above the tool holder assembly (100) and is equipped with a chuck (62). An elastic pad (63) for contacting and engaging with the upper surface of the tool holder assembly (100) is attached to the surface of the chuck (62) opposite to the clamping arm (61).

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