Testing device for establishing relevance between scar skin and simulation model

Abstract

The utility model discloses a testing device for establishing relevance between scar skin and a simulation model, which is characterized by comprising a pressure acquisition needle, a digital-to-analog conversion device and a host, the pressure acquisition needle is connected with the digital-to-analog conversion device through a wire, and the digital-to-analog conversion device is connected with the host through a wire. The pressure collecting needle is specifically a pressure sensor which is of an annular structure, the upper end face of the pressure collecting needle is fixedly connected with a shell, an injector is arranged in a hollow area of the pressure sensor, and the injector can slide in the hollow area of the pressure sensor; an internal fixing part is arranged on the outer side of the injector, threads are arranged at the front end of the internal fixing part, a needle head is arranged at the front end of the injector, and the injector and the internal fixing part are fixedly connected through a nut. The device can ensure that the selected model is reliable and has strong relevance with the real skin.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical equipment, more particularly to a kind of testing device for the relevance establishment of scar skin and simulation model. BACKGROUND

[0002] Drug injection is a common method of disease treatment, and different injection methods appear in the process of treating skin diseases according to different skin conditions. The present application focuses on skin injection of scar skin. Scar skin and normal skin have significant differences in tissue structure. Scar tissue is usually composed of excessive hyperplastic fibrous connective tissue, collagen fibers are arranged in disorder, and elastic fibers are reduced, resulting in hard skin texture and poor elasticity. This structural change makes it difficult for drugs to diffuse and absorb in scar tissue, and more pressure is needed when injecting, increasing the difficulty of operation.

[0003] When selecting the injection method, the performance of the product needs to be verified. The verification method can choose a simulation model to simulate the clinical use method, realize the verification of the safety and effectiveness of the product, and how to confirm the relevance between the selected simulation model and the clinical skin is the key to verification in the process.

[0004] Now, when medical equipment performs this simulation analysis, it selects similar animal skin. This method is a general selection method, and there is no accurate method and data to explain the relevance between the selected animal model and real skin. In particular, the simulation of scar skin plays a greater role, and different scar skin structures, different degrees of lesions, and uniform simulation models cannot be found.

[0005] Therefore, a testing device for establishing the relevance between scar skin and simulation model is needed. Utility model content

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a testing device for establishing the relevance between scar skin and simulation model. The utility model realizes visualization of puncture data and selects simulation models without statistical difference in puncture force from real skin.

[0007] The utility model adopts the technical scheme to solve the existing problems:

[0008] A testing device for establishing the relevance between scar skin and simulation model, comprising a pressure collection needle 1, a digital-analog conversion device 2 and a host computer 3. The pressure collection needle 1 is connected to the digital-analog conversion device 2 through a wire, and the digital-analog conversion device 2 is connected to the host computer 3 through a wire.

[0009] The pressure collection needle is provided with a pressure sensor, the pressure sensor 15 is specifically an annular structure, the upper end face is fixedly connected with a shell 14, a syringe 11 is arranged in the hollow area of the pressure sensor 15, and the syringe 11 can slide in the hollow area of the pressure sensor 15; an internal fixing piece 12 is arranged outside the syringe 11, the front end of the internal fixing piece 12 is provided with a thread, a needle 18 is arranged at the front end of the syringe 11, and the syringe 11 and the internal fixing piece 12 are fixedly connected through a nut 13.

[0010] Preferably, the length of the shell 14 is slightly shorter than the syringe 11, and the syringe 11 can slide up and down in the shell 14.

[0011] Preferably, the nut 13 is a cylinder, and the front end of the cylinder is provided with a baffle, the middle of the baffle is provided with a through hole, and the size of the through hole is greater than that of the needle 18 of the syringe 11 and less than that of the needle cylinder of the syringe 11.

[0012] Preferably, the rear end of the cylinder of the nut 13 is provided with a thread, which can be screwed with the thread at the front end of the internal fixing piece 12.

[0013] Preferably, the shell 14 is further provided with a syringe scale 19 outside, and the syringe scale 19 is specifically a long strip-shaped transparent closed window, and specific scale values are marked on the window.

[0014] Preferably, the pressure sensor 15 comprises a sensor inner ring 16 and a collection card 17; the pressure sensor is provided with a T-shaped sensor inner ring 16 in the annular structure internal cavity, and the surface of the sensor inner ring 16 is tightly attached to the collection card 17.

[0015] Preferably, the internal fixing piece 12 is specifically a cylinder, the front end is consistent with the width of the nut 13, and the rear end is connected with the sensor inner ring 16 of the pressure sensor 15.

[0016] Preferably, the outer side of the pressure collection needle 1 is provided with a wiring hole, specifically, the signal line connected to the pressure sensor 15 in the pressure collection needle 1 is connected to the digital-analog conversion device 2 through the wiring hole.

[0017] Preferably, the host is installed with an upper computer, which is used for checking the puncture force data detected by the current device.

[0018] Preferably, the internal fixing piece 12 is provided with an oval long groove below.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The device is simple in operation and realizes data visualization. The puncture force of real skin and simulated skin can be detected by the detection device, and a non-difference simulation model is selected according to the specific puncture force data obtained by the device. The application of the device can ensure that the selected model is reliable and has strong relevance to real skin.

[0021] Especially for scarred skin, different scarred skin has different structural organization and lesion degree, so the selected specific simulation model is different. The device can accurately select a suitable simulation model for subsequent experiments, and provide reliable support for non-clinical research in the design and development process of medical devices. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model is further described below in combination with the drawings and examples.

[0023] Figure 1 A schematic view of the test device for establishing the relevance of scarred skin and simulation model,

[0024] Figure 2 A structural view of the pressure collection needle in the test device for establishing the relevance of scarred skin and simulation model,

[0025] Figure 3 An appearance view of the pressure collection needle in the test device for establishing the relevance of scarred skin and simulation model.

[0026] In the figure: 1 pressure collection needle, 11 syringe, 12 internal fixing part, 13 screw cap, 14 shell, 15 pressure sensor, 16 sensor inner ring, 17 collection card, 18 needle head, 19 syringe scale, 2 digital-to-analog conversion device, 3 host DETAILED DESCRIPTION

[0027] Some terms are used in the description and claims to refer to certain components. Those skilled in the art will understand that hardware manufacturers can use different names to refer to the same component. The description and claims of this specification do not distinguish components by name, but by the functional difference between components. As mentioned throughout the specification and claims, "comprising" is an open term, which should be interpreted as "comprising but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

[0028] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0029] The drawing is the test device for the correlation establishment of scar skin and simulation model, and the utility model is further explained in detail below in combination with the drawing.

[0030] A test device for the correlation establishment of scar skin and simulation model, comprising pressure acquisition needle 1, digital-analog conversion device 2 and host computer 3. Pressure acquisition needle 1 is connected with digital-analog conversion device 2 through wire, and digital-analog conversion device 2 is connected with host computer 3 through wire. When using the device, hold pressure acquisition needle 1 to perform injection puncture, and the puncture force of needle tube to skin acts on pressure sensor 15 of pressure acquisition needle 1 as reaction force, and pressure sensor 15 transmits the collected signal to digital-analog conversion device 2 through wire, and then transmits data information to host computer 3 through wire after conversion calculation, so that the puncture force is displayed in the host computer in the form of data and curve. The pressure acquisition needle is specifically the pressure sensor 15, which is specifically of annular structure, and the upper end face is fixedly connected with shell 14. The hollow area of pressure sensor 15 is provided with syringe 11, and syringe 11 can slide in the hollow area of pressure sensor 15. The outer side of syringe 11 is provided with internal fixing part 12, the front end of internal fixing part 12 is provided with screw thread, the front end of syringe 11 is provided with needle 18, and syringe 11 and internal fixing part 12 are fixedly connected through nut 13.

[0031] The device is matched with the syringe for use, and the syringe and the equipment need to be assembled before using pressure acquisition needle 1. The specific assembly process is that the syringe is inserted into the hollow area of internal fixing part 12, and then the syringe and internal fixing part 12 are inserted into pressure sensor 15 together, and needle 18 and internal fixing part 12 are exposed from the shell, and internal fixing part 12 and syringe 11 are fixed by screwing nut 13.

[0032] The pressure sensor 15 comprises a sensor inner ring 16 and a collection card 17. The pressure sensor is provided with the "T"-shaped sensor inner ring 16 in the internal cavity of the annular structure, and the surface of the sensor inner ring 16 is tightly attached to the collection card 17. The specific screw cap 13 is a barrel, and the front end of the barrel is provided with a baffle, the middle of the baffle is provided with a through hole, and the size of the through hole is specifically greater than the needle 18 of the syringe 11 and smaller than the needle barrel of the syringe 11. The rear end of the barrel of the screw cap 13 is provided with a thread, which can be screwed with the thread at the front end of the internal fixing part 12.

[0033] The length of the shell 14 is slightly shorter than the syringe 11, and the syringe 11 can slide up and down in the shell 14. The shell 14 is also provided with a syringe scale 19 outside, which is specifically a long strip-shaped transparent closed window, and the window is marked with specific scale values.

[0034] The specific internal fixing part 12 is a barrel, the front end is consistent with the width of the screw cap 13, and the rear end is connected with the sensor inner ring 6 of the pressure sensor 5. An oval long slot is arranged below the internal fixing part 12, which corresponds to the syringe scale 19 on the shell 14. The internal liquid state of the syringe is observed through the oval long slot and the long strip-shaped transparent closed window of the syringe scale 19.

[0035] The specific working process of the device is as follows:

[0036] Put the syringe into the pressure collection needle 1 and fix it with the screw cap 13, connect the line, turn on the switch of the host 3 and the analog-digital conversion device 2, and turn on the host 3.

[0037] Perform liquid injection, hold the shell 14 and the pressure sensor 15 to apply force, and insert the syringe needle tube 18 into the skin. At this time, the skin generates a reaction force on the needle tube 18, which acts on the internal fixing part 12, and is conducted to the collection card 17 through the sensor inner ring 16, and outputs a pressure signal. The pressure signal is transmitted to the digital-analog conversion device 2 for processing and then transmitted to the host 3 for display on the host computer.

[0038] Use the simulation model, use the same injection method, detect the puncture force, and select the model with no difference in force value as the scar simulation model, that is, use the puncture force to establish the relevance between the real lesion scar skin and the simulation model. The simulation model is usually selected as animal skin, and in this embodiment, it is specifically pig skin.

[0039] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A test device for the establishment of a correlation of a scarred skin with a simulation model, characterized in that Including pressure collection needle (1), digital analog conversion device (2) and host computer (3), pressure collection needle (1) is connected with digital analog conversion device (2) through wire, digital analog conversion device (2) is connected with host computer (3) through wire, the pressure collection needle is provided with pressure sensor, the pressure sensor (15) is specifically annular structure, the upper end surface is fixedly connected with shell (14), the hollow area of pressure sensor (15) is provided with syringe (11), and the syringe (11) can slide in the hollow area of pressure sensor (15), the outer side of syringe (11) is provided with internal fixing part (12), the front end of internal fixing part (12) is provided with screw thread, the front end of syringe (11) is provided with needle (18), and syringe (11) and internal fixing part (12) are fixedly connected by screw cap (13).

2. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The length of the shell (14) is slightly shorter than the syringe (11), and the syringe (11) can slide up and down in the shell (14).

3. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The screw cap (13) is a cylinder, and the front end of the cylinder is provided with a baffle, a through hole is arranged in the middle of the baffle, and the size of the through hole is greater than the needle (18) of the syringe (11) and less than the needle cylinder of the syringe (11).

4. A test device for establishing correlation of scarred skin with a simulation model according to claim 3, characterized in that The rear end of the cylinder of the screw cap (13) is provided with a screw thread, which can be screwed with the screw thread at the front end of the internal fixing part (12).

5. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The outside of the shell (14) is also provided with a syringe scale (19), which is a long strip transparent closed window, and the window is marked with specific scale values.

6. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The pressure sensor (15) includes a sensor inner ring (16) and a collection card (17), and the pressure sensor is an annular structure with a "T" shaped sensor inner ring (16) in the cavity, and the surface of the sensor inner ring (16) is closely attached to the collection card (17).

7. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The internal fixing part (12) is a cylinder, the front end is consistent with the width of the screw cap (13), and the rear end is connected with the sensor inner ring (16) of the pressure sensor (15).

8. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The outside of the pressure collection needle (1) is provided with a wiring hole, and the pressure sensor (15) in the pressure collection needle (1) is connected with a signal line, and the signal line is connected to the digital analog conversion device (2) through the wiring hole.

9. A test device for establishing correlation of scarred skin with a simulation model according to claim 1, characterized in that The host computer is provided with an upper computer for viewing the puncture force data detected by the current device.

10. A test device for establishing correlation of scarred skin with a simulation model according to claim 7, characterized in that The internal fixing part (12) is provided with an oval long slot below.

Images