Stainless steel needle tube body developing line processing equipment for medical equipment

Abstract

The invention discloses developing line processing equipment for a stainless steel needle tube body for medical equipment, and belongs to the technical field of developing line processing equipment for medical equipment, the developing line processing equipment specifically comprises thread rolling assemblies for forming developing lines, and the developing lines can be processed by stainless steel needle tube bodies with different wall thicknesses and different nominal sizes by controlling the distance of the thread rolling assemblies. In addition, the thread rolling assembly with the arc-shaped thread rolling plate matched with the thread rolling wheel is provided, continuous sample injection machining can be achieved, and the machining efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of a stainless steel needle tube reflection structure or an enhanced echo design or a development pattern design for medical equipment, and in particular to a processing device for processing the development pattern. Background Art

[0002] Acupuncture technology is a very important method in medical diagnosis and targeted treatment. At present, puncture is guided by real-time ultrasound images. Determining the reasonable puncture target point and needle insertion path can effectively ensure the puncture effect and reduce the pain of patients. Among them, image quality and positioning error between the needle tip and the target area are crucial and directly related to the diagnosis and treatment effect.

[0003] The ultrasonic waves emitted by the probe in the ultrasonic imaging device are reflected (scattered) back after encountering the tissue interface to form an ultrasonic image. Acoustic impedance is an important factor affecting the quality of ultrasonic images. Ultrasonic images, including acoustic angiography, are formed based on differences in acoustic impedance (such as soft tissue and metal needles).

[0004] The width of the ultrasonic beam emitted by the ultrasound probe is about 1 mm. If the ultrasonic beam and the puncture needle are not well aligned, it will be difficult to form an image. Poor image quality, slight displacement of the puncture needle, and the angle of the puncture approach will also affect the imaging effect.

[0005] The enhanced echo design can improve the reflection signal and increase the image visibility of the puncture needle, including adding irregular notches or small incisions on the surface of the puncture needle, including a thread groove structure and a right-angle groove structure.

[0006] Excessive echo reflections may also cause artifacts or shadows, making the ultrasound image unclear.

[0007] In addition, the friction between irregular incisions or notches and human tissue increases, which can easily cause discomfort to patients or tissue damage.

[0008] The Chinese utility model patent (CN 220608378 U) discloses an ultrasonic reflection structure and an ultrasonic puncture needle. A right-angled triangular pyramid-shaped groove is set on the needle body as a strong reflection structure, and at least one set of wedge-shaped grooves perpendicular to the opposite surfaces are set as a weak reflection structure. The combination is set to form a reflection structure with a strong and weak reflection gradient to obtain a better ultrasonic image and distinguish the posture and position of the puncture needle.

[0009] The processing methods of the above-mentioned reflective groove structure include laser, engraving, rolling, stamping and injection molding.

[0010] Laser processing equipment is expensive, and production efficiency depends on the difficulty of processing the laser and the workpiece; engraving, rolling and stamping are more common for flat workpiece processing. For tube bodies, especially stainless steel needle tubes for medical devices with a nominal outer diameter in the range of 0.18mm to 3.4mm, there are problems of high processing difficulty and low efficiency; injection molding is suitable for soft materials, and for stainless steel needle tubes, it will undoubtedly increase manufacturing costs.

[0011] There is a literature ("Study on the Influence of Surface Properties of Medical Puncture Needles on the Puncture Process", Gao Fan et al., Journal of Mechanical Engineering, 2021, Vol. 57, No. 11, pp. 44-51.) exploring the possible effects of different surface properties of puncture needles on the puncture process. It was found that the micro-texture structure on the surface of the puncture needle (strip-shaped grooves, groove depth 30 μm) can reduce the puncture force after the puncture needle enters the tissue, improve the tissue adhesion problem during the puncture process, and to a certain extent prevent the deflection of the needle body during the puncture process.

[0012] "Requirements and Test Methods for the Manufacture of Stainless Steel Needles for Medical Devices" (20214260-T-464) specifies the dimensions and mechanical properties of stainless steel needle tubes with nominal sizes (nominal outer diameter of the needle tube) ranging from 0.18mm to 3.4mm. The thicknesses of conventional wall (RW), thin wall (TW), ultra-thin wall (ETW) and ultra-thin wall (UTW) are also specified. Taking a stainless steel needle tube with a nominal size (nominal outer diameter of the needle tube) of 0.18mm as an example, the thickness of the conventional wall (RW) is 0.057mm~0.0635mm, the thickness of the thin wall (TW) is 0.0435mm~0.05mm, and the thickness of the ultra-thin wall (ETW) is 0.0365mm~0.043mm.

[0013] The different thicknesses and rigidity deflections of stainless steel needle tubes of the above specifications pose a challenge to the applicability of processing equipment.

[0014] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0015] The main purpose of the present invention is to provide a processing device that can directly process the developing texture structure on the stainless steel needle tube body for medical equipment, thereby improving the processing efficiency and reducing the production cost.

[0016] To achieve the above-mentioned purpose, the present invention provides a stainless steel needle tube body development pattern processing equipment for medical devices, including a rolling assembly for forming development patterns, the rolling assembly including a rolling plate and a tooth plate, the rolling plate is driven by a first motor, the tooth plate is driven by a second motor, the first motor and the second motor are arranged on a frame; the rolling plate is arranged parallel to the tooth plate, and the rolling teeth on the rolling plate are mirror-symmetrical with the rolling teeth on the tooth plate.

[0017] Preferably, the rolling teeth on the rolling teeth plate are inclined at a certain angle.

[0018] Preferably, the rubbing plate is arranged on a fixing seat I, and the tooth plate is arranged on a fixing seat II.

[0019] Preferably, a displacement fine-tuning device is provided on the fixing seat I and the fixing seat II.

[0020] The present application proposes another device for developing texture of a stainless steel needle tube body for medical devices, including a thread rolling component for forming developed texture, the thread rolling component including an arcuate thread rolling plate and a thread rolling wheel, the arcuate thread rolling plate is driven by a first motor, the thread rolling wheel is driven by a second motor, the first motor and the second motor are arranged on a frame; the arcuate thread rolling plate and the thread rolling wheel are arranged cocentrically, and the thread rolling of the arcuate thread rolling plate matches the thread rolling of the thread rolling wheel.

[0021] Preferably, the arc-shaped thread rolling plate comprises an inlet flat end, an outlet flat end and a thread rolling section arranged between the inlet flat end and the outlet flat end.

[0022] Preferably, the inlet flat end and the outlet flat end have frosted surfaces.

[0023] Preferably, the arc length of the thread rolling segment is greater than 5%-10% of the circumference of the stainless steel needle tube body.

[0024] The above scheme also includes a loading unit, which includes a fixed plate I and a movable plate arranged in parallel, and the fixed plate I and the movable plate are provided with inclined slopes.

[0025] The technical solution proposed in this application is a thread rolling assembly for forming development lines. By controlling the spacing of the thread rolling assembly, it can adapt to the processing of development lines on stainless steel needle tubes with different wall thicknesses and different nominal sizes. In addition, a thread rolling assembly with an arc-shaped thread rolling plate and a thread rolling wheel is proposed, which can realize continuous sample feeding processing and significantly improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the processing equipment involved in the embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A partial enlarged view of middle A.

[0028] Figure 3 It is a schematic diagram of the structure of a tooth-rolling assembly involved in an embodiment of the present invention.

[0029] Figure 4 It is a schematic structural diagram of another tooth-rolling assembly involved in an embodiment of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of a feeding unit involved in an embodiment of the present invention.

[0031] Figure Number and Name:

[0032] 100. Base;

[0033] 11. Processing unit;

[0034] 111, frame; 112, first motor; 112a, guide rail; 1121, fixed seat I; 1122, rubbing plate; 113, second motor; 1131, fixed seat II; 1132, rubbing plate; 122, stainless steel needle tube;

[0035] 2122, arc-shaped thread rolling plate; 2122a, inlet flat end; 2122b, outlet flat end; 2122c, thread rolling section; 2132, thread rolling wheel; 2132c, circular thread rolling section;

[0036] 22. Loading unit;

[0037] 221. Fixed plate I; 2211. Slope I; 222. Movable plate; 223. Intermediate plate; 2231. Slope II; 224. Fixed plate II; 225. Third motor; 226. Fixed column; 227. Threaded rod; 228. Lifting bracket; 229. Sensor.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] Stainless steel needle tube body development and texture processing equipment for medical devices, such as Figure 1 As shown, the processing equipment includes a base 100 , and a processing unit 11 and a loading unit 22 arranged on the base 100 .

[0041] The processing unit 11 includes a frame 111, a first motor 112 and a second motor 113 disposed on the frame 111. In some embodiments, the first motor 112 and the second motor 113 are disposed in a vertical direction. The output shaft end of the first motor 112 is connected to a fixed seat I 1121, which is slidably disposed on a guide rail 112a and can move up and down. A rubbing plate 1122 is detachably disposed on the side of the fixed seat I 1121; the output shaft end of the second motor 113 is connected to a fixed seat II 1131, and a tooth plate 1132 is detachably disposed on the side of the fixed seat II 1131. The tooth plate 1132 matches the tooth plate 1122 ( Figure 2 ).

[0042] The rubbing teeth on the rubbing plate 1122 and the tooth plate 1132 are mirror-symmetrical. Figure 3 As shown, the teeth of the tooth-rolling plate 1122 are inclined at a certain angle, such as 30°, 45° or 60°. The larger the tooth-rolling inclination angle, the denser the developing lines formed on the stainless steel needle tube body. The tooth-rolling plate 1122 with different tooth-rolling angles can be selected and combined with the corresponding tooth plate 1132 for thread rolling. The developing lines with different densities and developing lines with different depths can be processed to obtain stainless steel needle tubes for medical devices with excellent performance.

[0043] In some embodiments, a displacement fine-tuning device, such as a linear motor module and a manual adjustment button, is provided on the fixed seat I 1121 to achieve vertical and horizontal displacement adjustment of the tooth plate 1122 on the fixed seat I 1121. Similarly, a displacement fine-tuning device is provided on the fixed seat II 1131 to achieve vertical and horizontal displacement adjustment of the tooth plate 1132.

[0044] It can be seen that when the displacement fine-tuning device is selected such as a linear motor module, the displacement adjustment can be achieved through the control system.

[0045] This application proposes another tooth rolling component structure, such as Figure 4 As shown, it includes an arc-shaped thread rolling plate 2122 and a thread rolling wheel 2132 matched with the arc-shaped thread rolling plate 2122. It can be known that the arc-shaped thread rolling plate 2122 and the thread rolling wheel 2132 can be respectively arranged on a fixed seat (such as a fixed seat I and a fixed seat II), and the distance between the arc-shaped thread rolling plate 2122 and the thread rolling wheel 2132 can be adjusted by a displacement fine-tuning device.

[0046] Please see again Figure 4The arc-shaped thread rolling plate 2122 is co-centered with the thread rolling wheel 2132, and the extrusion zone Ca of the arc-shaped thread rolling plate 2122 includes an inlet flat end 2122a, an outlet flat end 2122b, and a thread rolling section 2122c. The inlet flat end 2122a and the outlet flat end 2122b are smooth surfaces or have fine lines or frosted surfaces protruding on the surface, preferably frosted surfaces. The stainless steel needle tube 122 enters the extrusion zone Ca from the inlet flat end 2122a, and after processing, it slides out from the outlet flat end 2122b. The inlet flat end 2122a and the outlet flat end 2122b have frosted surfaces, and there is a small friction force with the stainless steel needle tube 122, so as to avoid slipping at the inlet flat end 2122a and being unable to enter the thread rolling section 2122c. At the same time, the stainless steel needle tube 122 is prevented from getting stuck or slipping at the outlet flat end 2122b.

[0047] The thread rolling section 2122c of the arc-shaped thread rolling plate 2122 has thread rolling protruding outwards, and the thread rolling wheel 2132 has a circular thread rolling section 2132c and thread rolling protruding outwards. The thread rolling wheel 2132 rolls (clockwise in the figure), driving the stainless steel needle tube 122 to roll along the thread rolling section 2122c of the arc-shaped thread rolling plate 2122, and processing the developing lines on the tube body of the stainless steel needle tube 122.

[0048] In some embodiments, to avoid overlapping or staggered development patterns on the stainless steel needle tube 122, the arc length (l) of the arc-shaped rolling plate 2122's rolling segment 2122c is slightly larger than the circumference (l0) of the stainless steel needle tube 122, such as (5%-10%)×l0.

[0049] It can be known that the thread rolling of the arc-shaped thread rolling plate 2122 and the thread rolling of the thread rolling wheel 2132 are mirror-symmetrical, such as the thread rolling on the thread rolling plate 1122 and the thread rolling on the thread rolling plate 1132 mentioned in the above embodiment.

[0050] In the above embodiment, the arc-shaped thread rolling plate 2122 cooperates with the thread rolling wheel 2132 to achieve continuous sample feeding and significantly improve processing efficiency.

[0051] See also Figure 5 The feeding unit 22 includes a fixed plate 1221 and a movable plate 222. The fixed plate 1221 and the movable plate 222 are provided with slopes on the inner sides thereof, such as a slope 1211 provided on the fixed plate 1221, the slope is kept horizontal in the y-axis direction, and the stainless steel needle tube 122 can be laid flat on the slope. A lifting bracket 228 is provided at the front end of the fixed plate 121 and the movable plate 222, and the lifting bracket 228 can accommodate a stainless steel needle tube 122. The lifting bracket 228 delivers the stainless steel needle tube 122 into the processing unit 11 for developing and patterning processing, and the lifting bracket 228 is reset, and the next stainless steel needle tube 122 enters the lifting bracket 228.

[0052] A sensor 229 is provided at the front end of the movable plate 222 for detecting whether the stainless steel needle tube 122 enters the lifting bracket 228 .

[0053] In some embodiments, an intermediate plate 223 is further disposed between the fixed plate I 221 and the movable plate 222, and a slope II 2231 is disposed on the intermediate plate 223 corresponding to the slope I 2211 on the fixed plate I 221. It can be seen that the slope II 2231 has the same slope as the slope I 2211.

[0054] A fixed plate II 224 is arranged near the movable plate 222, and a third motor 225 is arranged on the fixed plate II 224. A plurality of fixed columns 226 are fixedly arranged on the fixed plate II 224 along the y direction, and the movable plate 222 can slide forward and backward along the y-axis direction on the fixed columns 226; a threaded rod 227 is fixedly arranged on the fixed plate II 224 along the y direction, and the movable plate 222 has a threaded hole corresponding to the threaded rod 227 and is threadedly connected to the threaded rod 227, and one end of the threaded rod 227 is connected to the output shaft of the third motor 225 to control the rotation of the third motor 225, so as to realize the forward and backward movement of the movable plate 222 along the y-axis direction.

[0055] It can be known that when the thread rolling assembly selects the arc thread rolling plate 2122 and the thread rolling wheel 2132, the lifting bracket 228 can be omitted, and the stainless steel needle tube 122 can be directly rolled into the inlet flat end 2122a of the arc thread rolling plate 2122 from the inclined slope.

[0056] For stainless steel needle tubes 122 of different lengths, the distance between the movable plate 222 and the fixed plate I 221 is adjusted by the third motor 225 to ensure that the stainless steel needle tube 122 can be laid flat on the slope of the fixed plate I 221 and the movable plate 222.

[0057] It should be noted that sensors, such as pressure sensors, are provided on the thread rolling plate 1122, the tooth plate 1132 or the arc-shaped thread rolling plate 2122, and the thread rolling wheel 2132. Before processing, the pressure of the thread rolling plate 1122 and the tooth plate 1132, the arc-shaped thread rolling plate 2122 and the thread rolling wheel 2132 on the stainless steel needle tubes 122 of different nominal sizes needs to be adjusted.

[0058] In some embodiments, a purge is provided near the rolling components, such as the rolling plate 1122 and the tooth plate 1132, and the arc-shaped rolling plate 2122 and the thread rolling wheel 2132. During the processing and developing of the lines, metal debris will appear, and the purge is performed in time to avoid the metal debris from affecting the rolling.

[0059] In some embodiments, the processing equipment further includes a control system, which is electrically connected to the first motor 112, the second motor 113, the third motor 225, the lifting bracket and the sensor (such as a pressure sensor, a reset sensor).

[0060] Exemplarily, the control system controls the rubbing plate servo inching speed (such as the first motor speed), the tooth plate servo electric speed (such as the second motor speed), the rubbing speed of the rubbing plate, the starting position of the tooth plate, etc.

Claims

1. A device for processing the developing lines of a stainless steel needle tube body for medical instruments, comprising a rolling assembly for forming developing lines, the rolling assembly comprising a rolling plate (1122) and a tooth plate (1132), the rolling plate (1122) being driven by a first motor (112), the tooth plate (1132) being driven by a second motor (113), the first motor (112) and the second motor (113) being arranged on a frame (111); characterized in that: The tooth-rubbing plate (1122) is arranged in parallel with the tooth plate (1132), and the tooth-rubbing surfaces on the tooth-rubbing plate (1122) and the tooth-rubbing surfaces on the tooth plate (1132) are mirror-symmetrical.

2. The processing equipment according to claim 1, characterized in that: The rolling teeth on the rolling plate (1122) are inclined at a certain angle.

3. The processing equipment according to claim 2, characterized in that: The tooth rubbing plate (1122) is arranged on a fixing seat I (1121), and the tooth plate (1132) is arranged on a fixing seat II (1131).

4. The processing equipment according to claim 3, characterized in that: The fixing seat I (1121) and the fixing seat II (1131) are provided with a displacement fine-tuning device.

5. A device for processing the developing lines of a stainless steel needle tube body for medical instruments, comprising a thread rolling component for forming developing lines, the thread rolling component comprising an arc-shaped thread rolling plate (2122) and a thread rolling wheel (2132), the arc-shaped thread rolling plate (2122) being driven by a first motor (112), the thread rolling wheel (2132) being driven by a second motor (113), the first motor (112) and the second motor (113) being arranged on a frame (111); characterized in that: The arc-shaped thread rolling plate (2122) and the thread rolling wheel (2132) are arranged cocentrically, and the thread rolling of the arc-shaped thread rolling plate (2122) matches the thread rolling of the thread rolling wheel (2132).

6. The processing equipment according to claim 5, characterized in that The arc-shaped thread rolling plate (2122) comprises an inlet flat end (2122a), an outlet flat end (2122b), and a thread rolling section (2122c) arranged between the inlet flat end (2122a) and the outlet flat end (2122b).

7. The processing equipment according to claim 6, characterized in that The inlet flat end (2122a) and the outlet flat end (2122b) have frosted surfaces.

8. The processing equipment according to claim 7, characterized in that: The arc length of the thread rolling section (2122c) is greater than 5%-10% of the circumference of the stainless steel needle tube (122).

9. The processing equipment according to any one of claims 1 to 8, characterized in that: The invention also comprises a loading unit (22), wherein the loading unit (22) comprises a fixed plate I (221) and a movable plate (222) arranged in parallel, and inclined slopes are arranged on the fixed plate I (221) and the movable plate (222).

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