Wound infected tissue sampling device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a wound infected tissue sampling device which comprises an inner cylinder, a screw cap is fixedly arranged at the top of the inner cylinder, rotatable outer cylinders are arranged on the outer side of the inner cylinder at intervals, a through hole is formed in the screw cap in a penetrating mode, and a supporting connecting rod capable of moving up and down is arranged in the through hole in a penetrating mode. The lower end of the supporting connecting rod is fixedly connected with a cutting tool bit of a conical structure. According to the utility model, the cutting tool bit can be driven to move up and down through the arranged knob and the supporting connecting rod, so that the sampling depth can be accurately controlled, the dependence on the proficiency and experience of an operator is reduced, the sampling accuracy is improved, unnecessary wounds are reduced, point-to-surface cutting sampling is realized through the cutting tool bit, and the sampling efficiency is improved. The device is simple in structure and convenient to use, can cut into the hardened skin surface, reduces the pressure of an operator, avoids aggravating the pain of a patient, is more suitable for different parts and different types of skin by adopting a girdling mode, and improves the sampling convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a wound infection tissue sampling device. Background Art

[0002] Skin infection refers to local tissue and systemic infection caused by pathogens such as bacteria, viruses, fungi, and parasites invading the skin. These pathogens can cause inflammation of skin tissue, leading to redness, swelling, itching, and even skin inflammation. Treatment depends on the specific type and severity of the infection, including topical anti-inflammatory drugs, antibiotics, antifungal drugs or antiviral drugs, as well as necessary debridement and care.

[0003] In medical practice, sampling of infected tissue from skin wounds is an important step in diagnosis and treatment. The existing sampling method usually uses a skin trephine for sampling. When sampling, hold the trephine perpendicular to the skin surface, place the trephine head close to the skin surface, quickly rotate the trephine handle, and apply pressure deep into the skin. When the trephine reaches a certain depth (generally required to reach 3-6mm under the skin), lift the trephine, and then use small curved dissecting scissors to cut the tissue in the shallow layer of subdermal fat to ensure that a complete skin sample is obtained.

[0004] However, the sampling depth of the trephine is difficult to control and depends on the operator's proficiency and experience. Unskilled operation may lead to inaccurate sampling or unnecessary trauma. Although the trephine can effectively sample most skin parts, it may be difficult to operate in some special parts such as uneven or narrow areas. In addition, the surface of some infected skin will harden, and the trephine is not easy to cut in. The operator needs to apply more pressure, which can easily cause the skin to be damaged and increase the patient's pain. Therefore, there is an urgent need for a wound infection tissue sampling device that is easy to operate, has easy to control the sampling depth, and can sample skin at different parts and infection levels. Utility Model Content

[0005] In view of the existing deficiencies, the utility model provides a wound infection tissue sampling device, which solves the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A wound infection tissue sampling device comprises an inner cylinder, a screw cap is fixedly provided on the top of the inner cylinder, a rotatable outer cylinder is arranged at intervals on the outside of the inner cylinder, a through hole is penetrated inside the screw cap, and the through hole is located in the area between the inner cylinder and the outer cylinder, a supporting connecting rod which can move up and down is penetrated inside the through hole, a cutting head with a conical structure is fixedly connected to the lower end of the supporting connecting rod, a movable holder with a 7-shaped structure is fixedly provided at the upper port of the through hole, and a rotatable internal threaded knob is assembled on the movable holder.

[0008] Furthermore, an upper region of the annular surface of the support connecting rod is provided with an external thread, and the support connecting rod passes through the internal thread knob and is screwed therewith by means of a thread.

[0009] Furthermore, a connecting plate is fixedly provided at the upper end of the supporting connecting rod, a ruler plate is fixedly connected to the outer end of the connecting plate, and the lower end of the ruler plate extends into the interior of the rotary cover and can move up and down.

[0010] Furthermore, scale lines are engraved on both the front and rear side surfaces of the ruler.

[0011] Furthermore, a limit clamping plate with an annular structure is fixedly provided at the upper end of the outer cylinder, a limit retaining ring is clamped at the lower side of the limit clamping plate, the limit retaining ring is fixedly connected to the rotary cover, and the outer cylinder is rotatably connected to the limit retaining ring and the rotary cover through the limit clamping plate.

[0012] Furthermore, a pressure plate with a horizontal structure is fixedly provided at the lower end edge of the outer cylinder annular surface.

[0013] Furthermore, a silicone sheath is provided on the annular surface of the outer cylinder.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model can drive the cutting head to move up and down through the knob and the supporting connecting rod, so that the sampling depth can be accurately controlled, reducing the dependence on the operator's proficiency and experience, improving the accuracy of sampling, and reducing unnecessary trauma. At the same time, the cutting head can realize point-to-surface cutting sampling, which helps to cut into the hardened skin surface, reduce the operator's pressure, avoid aggravating the patient's pain, and adopts a circular cutting method to make it more suitable for different parts and different types of skin, thereby improving the convenience of sampling.

[0016] 2. In the utility model, an external thread is provided on the upper area of ​​the support link ring surface, and the support link passes through the internal thread knob and is screwed with it through a thread. This design can accurately adjust the upper and lower positions of the support link and the cutting head by rotating the internal thread knob, allowing the operator to adjust the cutting head to a suitable depth according to the sampling requirements, conveniently controlling the sampling depth of the skin, and maintaining stability during the sampling process.

[0017] 3. A connecting plate is fixedly provided at the upper end of the support link, and a ruler plate is fixedly connected to the outer end of the connecting plate. The lower end of the ruler plate extends into the interior of the rotary cover and can move up and down. The ruler plate is set to limit the support link, preventing the support link from rotating with the knob when it moves up and down, thereby ensuring the stability of the support link.

[0018] 4. There are scale lines engraved on both sides of the ruler, which provide an intuitive reference for the sampling depth of the operator, making it easier to control the sampling depth of the skin. When adjusting the position of the supporting link, the operator can accurately control the sampling depth of the cutting head by observing the scale on the ruler, thereby improving the accuracy of sampling.

[0019] 5. A horizontal pressure plate is fixedly provided at the lower edge of the outer cylinder ring surface. The design of the pressure plate enables the sampling device to fit the skin surface more stably during sampling, while increasing the contact area between the device and the skin, ensuring the stability of the device, and reducing the pressure on the skin during the sampling process, thereby reducing the risk of skin damage or discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a schematic structural diagram of the utility model from another angle.

[0022] Figure 3 It is a schematic diagram of the disassembled structure of the utility model.

[0023] Figure 4 It is a front cross-sectional view of the utility model.

[0024] In the figure: 1. screw cap; 2. silicone sleeve; 3. outer cylinder; 4. pressure plate; 5. limit ring; 6. inner cylinder; 7. supporting connecting rod; 8. internal thread knob; 9. movable holder; 10. limit plate; 11. connecting plate; 12. ruler plate; 13. through hole; 14. cutting head. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] like Figures 1 to 4As shown, a wound infection tissue sampling device comprises an inner cylinder 6, a screw cap 1 is fixedly arranged on the top of the inner cylinder 6, a rotatable outer cylinder 3 is arranged at intervals on the outer side of the inner cylinder 6, a through hole 13 is penetrated and opened inside the screw cap 1, and the through hole 13 is located in the area between the inner cylinder 6 and the outer cylinder 3, a supporting connecting rod 7 which can move up and down is penetrated inside the through hole 13, a cutting blade 14 with a conical structure is fixedly connected to the lower end of the supporting connecting rod 7, a movable holder 9 with a 7-shaped structure is fixedly arranged at the upper side port of the through hole 13, and a rotatable internal thread knob 8 is assembled on the movable holder 9. This design solves the problem that the sampling depth of the trephine used in the prior art is difficult to control and is more dependent on the proficiency and experience of the operator. Unskilled operation may lead to inaccurate sampling or unnecessary trauma. Although the trephine can effectively sample in most skin parts, it may be difficult to operate in some special parts such as uneven or narrow areas, and the surface of the skin after some infections will harden, and the trephine is not easy to cut into, requiring the operator to apply greater pressure, which is easy to cause the skin affected area to be damaged more and increase the pain of the patient.

[0027] An external thread is provided on the upper area of ​​the ring surface of the support link 7, and the support link 7 passes through the internal thread knob 8 and is screwed therewith. This design can accurately adjust the upper and lower positions of the support link 7 and the cutting head 14 by rotating the internal thread knob 8, allowing the operator to adjust the cutting head 14 to a suitable depth according to the sampling requirements, conveniently controlling the sampling depth of the skin, and maintaining stability during the sampling process.

[0028] A connecting plate 11 is fixedly provided at the upper end of the supporting link 7, and a ruler plate 12 is fixedly connected to the outer end of the connecting plate 11, and the lower end of the ruler plate 12 extends into the interior of the rotary cover 1 and can move up and down. This design uses the ruler plate 12 to limit the supporting link 7, preventing the supporting link 7 from rotating with the knob when moving up and down, thereby ensuring the stability of the supporting link 7.

[0029] The scales are engraved on both the front and rear sides of the ruler 12, which provide an intuitive reference for the sampling depth of the operator, making it easier to control the sampling depth of the skin. When adjusting the position of the supporting link 7, the operator can accurately control the sampling depth of the cutting head 14 by observing the scales on the ruler 12, thereby improving the accuracy of sampling.

[0030] A limiting clamping plate 10 of an annular structure is fixedly arranged at the upper end of the outer cylinder 3, a limiting retaining ring 5 is clamped at the lower side of the limiting clamping plate 10, the limiting retaining ring 5 is fixedly connected to the rotary cover 1, and the outer cylinder 3 is rotatably connected to the limiting retaining ring 5 and the rotary cover 1 through the limiting clamping plate 10. Through the cooperation of the limiting clamping plate 10 and the limiting retaining ring 5, the outer cylinder 3 can rotate smoothly on the rotary cover 1 without moving up and down or shaking, thereby ensuring the stability of the sampling operation.

[0031] A horizontal pressure plate 4 is fixedly provided at the lower edge of the annular surface of the outer cylinder 3. The design of the pressure plate 4 enables the sampling device to fit the skin surface more stably during sampling, while increasing the contact area between the device and the skin, ensuring the stability of the device, and reducing the pressure on the skin during the sampling process, thereby reducing the risk of skin damage or discomfort.

[0032] A silicone sheath 2 is sleeved on the annular surface of the outer tube 3. The silicone sheath 2 increases the friction between the device and the hand when the device is used, so that the operator can hold the device firmly to prevent it from slipping.

[0033] The working principle of the wound infection tissue sampling device is as follows: when in use, the operator holds the silicone sleeve 2 on the device with one hand, places the device vertically in the skin sampling area, and fits the pressing plate 4 with the skin surface. Then, by rotating the internal thread knob 8, the upper and lower positions of the support connecting rod 7 and the cutting head 14 are accurately adjusted so that the cutting head 14 penetrates into the skin. At this time, the required sampling depth is determined by observing the scale line on the ruler 12. The scale on the ruler 12 provides an intuitive reference for the operator, so that each sampling can reach the expected depth, thereby improving the accuracy of sampling. Then, the rotary cover 1 is rotated, and the cutting head 14 is driven by the rotary cover 1 to move in a circular manner along the outer cylinder 3 and the inner cylinder 6, and a circular sampling area is cut out on the skin by the movement of the cutting head 14. Then, the position of the cutting head 14 is adjusted to retract it into the inner part of the outer cylinder 3 so that the tip is not exposed. Then, the device is removed from the skin, and small curved dissecting scissors are used to cut the tissue in the shallow layer of subdermal fat to obtain a complete skin sample.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A wound infection tissue sampling device, comprising an inner cylinder (6), characterized in that: A rotary cover (1) is fixedly provided on the top of the inner cylinder (6), a rotatable outer cylinder (3) is arranged at intervals outside the inner cylinder (6), a through hole (13) is penetrated inside the rotary cover (1), and the through hole (13) is located in the area between the inner cylinder (6) and the outer cylinder (3), a supporting connecting rod (7) movable up and down is penetrated inside the through hole (13), a cutting blade (14) with a conical structure is fixedly connected to the lower end of the supporting connecting rod (7), a movable clamping seat (9) with a 7-shaped structure is fixedly provided at the upper side end of the through hole (13), and a rotatable internal thread knob (8) is mounted on the movable clamping seat (9).

2. The wound infection tissue sampling device according to claim 1, characterized in that: An external thread is provided in the upper region of the annular surface of the support connecting rod (7), and the support connecting rod (7) passes through the internal thread knob (8) and is screwed thereto via a thread.

3. The wound infection tissue sampling device according to claim 1, characterized in that: A connecting plate (11) is fixedly provided at the upper end of the supporting connecting rod (7), a ruler plate (12) is fixedly connected to the outer end of the connecting plate (11), and the lower end of the ruler plate (12) extends into the interior of the rotary cover (1) and can move up and down.

4. The wound infection tissue sampling device according to claim 3, characterized in that: The ruler plate (12) is provided with scale lines on both the front and rear side surfaces.

5. The wound infection tissue sampling device according to claim 1, characterized in that: A limiting clamping plate (10) of an annular structure is fixedly provided at the upper end of the outer cylinder (3), a limiting retaining ring (5) is clamped at the lower side of the limiting clamping plate (10), the limiting retaining ring (5) is fixedly connected to the rotary cover (1), and the outer cylinder (3) is rotatably connected to the limiting retaining ring (5) and the rotary cover (1) via the limiting clamping plate (10).

6. The wound infection tissue sampling device according to claim 1, characterized in that: A pressure plate (4) with a horizontal structure is fixedly arranged at the lower end edge of the annular surface of the outer cylinder (3).

7. The wound infection tissue sampling device according to claim 6, characterized in that: The outer cylinder (3) has a silicone sleeve (2) sleeved on its annular surface.

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