External fixation needle passage dressing change device

Abstract

The invention discloses a dressing change device for an external fixation needle passage. The dressing change device comprises a semi-fixed ring and an absorption part, the absorption part is fixedly installed at the lower end of the semi-fixed ring, the semi-fixed ring and the absorption part are both of a non-closed annular structure, a plurality of medicine adding channels are further fixedly arranged at the upper end of the side wall of the semi-fixed ring in a circumferential array mode, and the whole device can be fixed to the outer side of a needle passage through the non-closed annular structure. Meanwhile, the non-closed annular structure is used for replacing a traditional gauze winding mode for fixing, and rapid fixing can be achieved; meanwhile, the semi-fixed ring and the absorption part are each of a multi-layer structure, and an absorption layer and a hydrophobic layer are sequentially arranged in the semi-fixed ring and the absorption part; meanwhile, a connecting part used for connecting and sealing is further arranged at the fracture of the semi-fixing ring, and the semi-fixing ring can be relatively sealed and fixed through the arranged connecting part; and the seepage is absorbed through the absorption layer while the medicine is added through the medicine adding channel.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an external fixation needle tract dressing change device. Background Technology

[0002] Skeletal traction is an orthopedic treatment technique that uses metal traction pins or screws inserted into the bone to apply traction force based on mechanical principles, in order to reduce fractures, correct deformities, relieve pain, reduce soft tissue compression, or maintain joint stability. External fixation, on the other hand, is an orthopedic surgical technique that involves percutaneously inserting multiple steel pins or screws (called fixation pins) at the proximal and distal ends of the fracture. These fixation pins are then connected externally using clamps and connecting rods to form a stable frame structure, thereby fixing the fracture from the outside.

[0003] When using skeletal traction and external fixation, pin tracts exist, and pin tract care is a crucial aspect of postoperative management. Fluid leakage from the pin tract is common 1-2 weeks post-surgery. Improper dressing changes can lead to pin tract loosening, infection, or even osteomyelitis, affecting secondary fracture internal fixation surgeries. Currently, clinically, pin tract dressing changes typically involve disinfecting the area and then covering the pin tract with a cut-side dressing, or disinfecting the area and wrapping it with dry gauze. While these methods achieve the desired results, they still have certain drawbacks. For example, cutting the dressing requires sterility, is cumbersome, and the dressing's poor absorbency can hinder local drainage, causing adhesion to skin and hair, and resulting in pain during dressing changes. Dry gauze wrapping is prone to loosening and requires multiple wrappings. Furthermore, the small distance between the fixation clamps and the skin limits the space for gauze wrapping, making the process tedious and highly susceptible to pin tract contamination. Therefore, current methods still have limitations.

[0004] Therefore, an external fixation needle tract dressing change device is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention presents an external fixation needle channel dressing change device. This device can be directly fixed to the needle channel through a C-shaped structure design. Furthermore, the C-shaped structure is expandable and can accommodate needle channels of varying lengths. Additionally, this device allows for medication administration after fixation and includes an adsorption layer to effectively absorb exudate.

[0006] To achieve the above-mentioned technical effects, this invention discloses an external fixation needle channel dressing change device, comprising: a semi-fixation ring and an absorbent part; the absorbent part is fixedly installed at the lower end of the semi-fixation ring, both the semi-fixation ring and the absorbent part are non-closed annular structures, and a plurality of drug delivery channels are also fixedly arranged in a circumferential array on the upper end of the side wall of the semi-fixation ring; at the same time, the semi-fixation ring and the absorbent part are composed of a multi-layer structure, and an absorbent layer and a hydrophobic layer are sequentially arranged inside the semi-fixation ring and the absorbent part; at the same time, a connecting part for connecting and sealing is provided at the break of the semi-fixation ring; while drug delivery is performed through the drug delivery channels, exudate is absorbed through the absorbent layer; Furthermore, the connecting part is composed of two magnets fixed to each other at the break of the semi-fixed ring, and is fixed by magnetic attraction; Furthermore, the connecting part is in the form of a fixing strap, and the end of the fixing strap is also provided with Velcro for fixing; Furthermore, a sealing ring is fixedly installed on the outside of the dosing channel. The sealing ring has a multi-valve structure. At the same time, a baffle plate for flow obstruction is also provided at the end of the dosing channel. The baffle plate is inclined downward. Furthermore, multiple friction pads are offsetly arranged on the inner sidewall of the semi-fixed ring below the drug delivery passage; Furthermore, a curved portion is fixedly installed at the lower end of the hydrophobic layer. The curved portion is rolled inward and the bending position of the curved portion is between the absorbent portion and the hydrophobic layer. Furthermore, the upper end of the semi-fixed ring is also fixedly connected with a telescopic part, which is composed of multiple segments of threaded elastic material.

[0007] The beneficial effects of this invention are: This invention discloses an external fixation needle tract dressing change device, comprising: a semi-fixation ring and an absorbent part; the absorbent part is fixedly installed at the lower end of the semi-fixation ring, and both the semi-fixation ring and the absorbent part are non-closed annular structures. Several drug delivery channels are also circumferentially arranged on the upper side wall of the semi-fixation ring. The non-closed annular structure can fix the entire device to the outside of the needle tract, and the non-closed annular structure replaces the traditional gauze wrapping method for quick fixation. The semi-fixation ring and the absorbent part are composed of a multi-layer structure, with an absorbent layer and a hydrophobic layer sequentially arranged inside each. A connecting part for sealing is also provided at the break of the semi-fixation ring, allowing for relative sealing and fixation. Drug is delivered through the drug delivery channels while exudate is absorbed by the absorbent layer. This method allows for both drug delivery and effective absorption of exudate. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0009] Figure 1 This is a schematic diagram of the overall structure of an external fixation needle channel dressing change device; Figure 2 This is a front view of an external fixation needle dressing device; Figure 3 This is a top view of an external fixation needle dressing device; Figure 4 This is a cross-sectional view of an external fixation needle dressing device; Figure 5 This is an enlarged schematic diagram of point A of an external fixation needle channel dressing change device; Figure 6 This is an enlarged schematic diagram of point B of an external fixation needle dressing device; Figure 7 This is a schematic diagram of another structure of the connecting part in Embodiment 1 of an external fixation needle channel dressing change device; Figure 8 This is a structural diagram of another model (short type) of an external fixation needle dressing device.

[0010] The attached diagram lists the components represented by each number as follows: 1-Semi-fixed ring, 11-Connecting part, 12-Dosing channel, 121-Sealing ring, 122-Blocking plate, 13-Extension part, 14-Friction pad, 15-Hydrophobic layer, 151-Bending part, 2-Absorbent part, 21-Absorbent layer, 3-Fixing strap, 31-Hook and loop fastener. Detailed Implementation Example 1

[0011] This invention, through innovative structural design and functional integration, specifically addresses the core technical problems existing in the dressing change process of existing bone traction and external fixation devices, such as unstable fixation, cumbersome operation, easy contamination, limited functionality, and poor adaptability. It significantly improves the safety, convenience, and effectiveness of needle tract care. By employing a non-closed ring structure and multi-dimensional fixation design, it overcomes the instability problem of traditional fixation methods, achieving reliable fixation and convenient installation of the needle tract. The specific structure is as follows: An external fixation needle tract dressing change device includes: a semi-fixation ring 1 and an absorbent part 2; the absorbent part 2 is fixedly installed at the lower end of the semi-fixation ring 1, and both the semi-fixation ring 1 and the absorbent part 2 are non-closed annular structures. A plurality of drug delivery channels 12 are also fixedly arranged in a circumferential array on the upper end of the side wall of the semi-fixation ring 1; the semi-fixation ring 1 and the absorbent part 2 are composed of a multi-layer structure, with an absorbent layer 21 and a hydrophobic layer 15 sequentially arranged inside the semi-fixation ring 1 and the absorbent part 2. Multiple friction pads 14 are staggered and arranged below the drug delivery channels on the inner side wall of the semi-fixation ring 1; and at the break point of the semi-fixation ring 1... The device is also equipped with a connecting part 11 for connection and closure. The connecting part 11 consists of two magnets fixed to each other at the break of the semi-fixed ring 1, and is fixed by magnetic attraction. While the drug is added through the drug delivery channel 12, the exudate is absorbed by the absorption layer 21. The non-closed ring structure integrating the semi-fixed ring 1 and the absorption part 2, combined with the magnetic attraction of the magnets at the break, effectively solves the problems of traditional dry gauze wrapping and fixation, which is prone to loosening due to patient movement, narrow operating space due to small distance between the fixation clamp and the skin, and cumbersome and time-consuming wrapping process. It avoids the risk of dressing displacement and needle track exposure due to insecure fixation. Medical staff can directly put the device on the outside of the needle track and traction nail / fixation nail from the break, and quickly complete the closure and fixation by magnetic attraction, shortening the operation time. The friction plate 14 fits tightly with the traction nail / fixation nail, significantly increasing the friction force. Combined with the stable locking of the connecting part 11, the device does not loosen or shift during the patient's daily activities, ensuring that the needle track is always effectively covered and protected. The semi-fixation ring 1 and the absorbent part 2 adopt a multi-layer composite structure of "absorbent layer 21 + hydrophobic layer 15". The absorbent layer 21 is made of medical absorbent cotton and super absorbent resin, and the hydrophobic layer 15 is made of medical waterproof and breathable membrane material. The super absorbent resin gives the absorbent layer 21 a super strong adsorption capacity, which can quickly absorb the exudate within 1-2 weeks after the needle tract surgery, ensuring that the needle tract area is always kept dry and clean.

[0012] In this embodiment, another form of the connecting part 11 is provided, specifically, the connecting part 11 is in the form of a fixing strap 3, and the end of the fixing strap 3 is also provided with Velcro 31 for fixing; quick fixing is achieved through the connecting part 11. Example 2

[0013] In this embodiment, a drug delivery channel 12 is arranged in a circumferential array on the upper sidewall of the semi-fixed ring 1. A multi-valve silicone sealing ring 121 is installed on the outer side of the channel, and a downwardly inclined medical plastic blocking sheet 122 is provided at the inner end. At the same time, an inwardly curled silicone bending portion 151 is designed at the lower end of the hydrophobic layer 15, and the bending position of the bending portion 151 is between the absorbent portion 2 and the hydrophobic layer 15. The device does not need to be removed during drug delivery. The syringe needle can directly penetrate the valve of the sealing ring 121 to inject the drug solution. The valve automatically closes after drug delivery, effectively blocking the entry of external bacteria, dust and other contaminants, reducing the needle tract contamination rate. The bending portion 151 fits tightly against the patient's skin, forming a sealing barrier to prevent the absorbed exudate from overflowing and contaminating the skin. At the same time, it further isolates external contamination. Under this dual protection, the incidence of complications such as needle tract infection and osteomyelitis is significantly reduced.

[0014] A sealing ring 121 is fixedly installed on the outer side of the drug delivery channel 12. The sealing ring 121 has a multi-valve membrane structure, similar to the membrane structure design of rubber in a beverage bottle cap in the prior art, or it can directly use rubber material to form a relative seal. This method is prior art and will not be described in detail here. At the end of the drug delivery channel 12, a flow-blocking plate 122 is also provided for flow obstruction. The flow-blocking plate 122 is inclined downwards. The flow-blocking plate 122 guides the liquid medicine to flow evenly towards the needle channel area along the inclined direction, ensuring that the liquid medicine covers the needle channel comprehensively and acts gently on the needle channel, thereby improving the efficacy of drug delivery. At the same time, it can prevent the liquid medicine from directly acting on the absorption layer 21, causing the liquid medicine to lose its effect. In addition, in this embodiment, a telescopic part 13 is fixedly connected to the upper end of the semi-fixed ring 1. The telescopic part 13 is composed of multiple segments of threaded elastic material. The elastic material allows it to adapt to needle tracks of various lengths.

[0015] In this embodiment, based on the device described in the above embodiments, specifically as follows: Figure 8 As shown, this device can be made into different models according to the actual needle path conditions. The commonly used model has a semi-fixed ring 1 with a diameter of 1.5cm and a height that can be set to 2cm, 2.5cm, and 3cm respectively. The inner diameter of the semi-fixed ring 1 is 0.3cm, which can adapt to the diameter of the needle path and ensure that the device can be installed on different needle paths after use.

[0016] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described.

Claims

1. An external fixed needle channel dressing changing device, characterized in that, Including semi-fixed ring and absorption part, the lower end of semi-fixed ring is fixedly installed absorption part, semi-fixed ring and absorption part are both non-closed annular structure, the upper end of side wall of semi-fixed ring is still circumferentially arrayed fixedly provided with a plurality of medicine adding channels, simultaneously, semi-fixed ring and absorption part are composed of multilayer structure, the inside of semi-fixed ring and absorption part is sequentially provided with absorption layer and hydrophobic layer, simultaneously, the fracture of semi-fixed ring is provided with connecting part for connecting closed, medicine is added through medicine adding channel, and at the same time, absorption layer is used to absorb exudate.

2. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The connecting part is composed of two magnets fixed at the fracture of the semi-fixed ring, and is fixed by magnetic attraction.

3. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The connecting part is in the form of a fixing band, and the end of the fixing band is provided with a magic tape for fixing.

4. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The outer side of the medicine adding channel is fixedly installed with a sealing ring, the sealing ring is a multi-valve structure, and a blocking piece for blocking flow is arranged at the end of the medicine adding channel, and the blocking piece is arranged obliquely downward.

5. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The lower end of the hydrophobic layer is further fixedly installed with a bending part, the bending part is installed inwardly, and the bending position of the bending part is between the absorption part and the hydrophobic layer.

6. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The lower end of the hydrophobic layer is further fixedly installed with a bending part, the bending part is installed inwardly, and the bending position of the bending part is between the absorption part and the hydrophobic layer.

7. The external fixed needle channel dressing changing device according to claim 1, characterized in that, The upper end of the semi-fixed ring is further fixedly connected with a telescopic part, and the telescopic part is composed of multiple threaded elastic materials.

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