Medical retractor integrating functions of illumination, smoke suction and blood suction and manufacturing method of medical retractor

Abstract

The invention relates to a medical retractor integrating lighting and smoke and blood suction functions and a manufacturing method thereof.The device comprises a disposable retractor, a lighting handle and a suction pipe, the far end of the disposable retractor is a retraction end, the near end of the disposable retractor is detachably connected with the far end of the lighting handle, the suction pipe is arranged in the extending direction of the disposable retractor, and the lighting handle is detachably connected with the suction pipe; the far end is close to the traction end, and the near end is used for being connected with negative pressure suction equipment; wherein the disposable retractor is made of a light-transmitting material, the far end of the disposable retractor is provided with a light guide window, the far end of the lighting handle is provided with a light emitting body, and light emitted by the light emitting body can enter the disposable retractor and is radiated outwards through the light guide window. The disposable retractor, the lighting handle and the suction pipe are integrated together, on one hand, good deep operation field lighting can be provided, the operation risk is reduced, on the other hand, smoke and blood generated in the operation can be sucked, the visibility of the operation field is improved, and the smoke is prevented from affecting the body of medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a medical retraction device integrating lighting and smoking and blood-sucking functions and a manufacturing method thereof. Background Art

[0002] Pelvic fractures are severe bone and joint injuries caused by high-energy trauma, and their treatment has always been a major challenge in the field of orthopedics. Such fractures are mostly caused by high-energy impacts such as traffic accidents, falls from heights, or crushing by heavy objects, and are often accompanied by severe complex injuries (such as rupture of large blood vessels, visceral injuries, spinal cord injuries, etc.) and complex anatomical structure damage (including interruption of pelvic ring continuity, dislocation of articular surfaces, sacroiliac joint dislocation, etc.). As the core mechanical support structure of the human body, the pelvic ring has a highly complex anatomical morphology, involving multi-dimensional connections of the ilium, ischium, pubis, and sacrum, and is surrounded by dense vascular and nerve bundles (such as the internal iliac artery and vein, lumbar sacral trunk, femoral nerve, etc.). The slightest carelessness in surgical operation can cause massive bleeding or neurological damage, leading to a significant increase in patient mortality.

[0003] Currently, surgical open reduction and internal fixation is the core treatment method for restoring the anatomical structure and joint surface integrity of the pelvic ring and reestablishing biomechanical stability. However, this procedure urgently needs to be overcome due to the following technical bottlenecks:

[0004] 1) Limitations of surgical field exposure

[0005] The deep pelvic anatomical region is confined, and traditional open surgery requires extensive soft tissue dissection, which can easily lead to iatrogenic injury. For example, the classic ilioinguinal approach requires dissection of the inguinal ligament, femoral vessels, and spermatic cord / teres ligament of the uterus. This is complex and can easily damage the "crown of death" vessels (abnormal anastomoses of the external iliac and obturator vessels), leading to an increased risk of massive intraoperative bleeding. Furthermore, traditional retractors (such as Hohmann retractors) only provide unidirectional traction, making it difficult to continuously and stably expose deep fracture ends. Excessive traction can also easily cause extraperitoneal tissue ischemia or nerve palsy.

[0006] 2) Serious harm caused by intraoperative smoke pollution

[0007] Equipment such as electric scalpels and ultrasonic scalpels widely used in pelvic fracture surgery will produce high-temperature vaporized tissue smoke, the components of which include 16 carcinogens such as benzene, acrylonitrile, formaldehyde, and bacterial aerosols. Studies have shown that this type of smoke can reduce visibility in the surgical field by more than 40%, significantly prolonging the operation time. Traditional suction devices have insufficient smoke removal efficiency due to design defects (such as single-tube negative pressure adsorption and operation away from the lesion), requiring frequent suspension of surgery to clear the smoke, increasing the risk of infection and anesthesia time. What's more serious is that medical staff are exposed to such polluted environments for a long time, and their incidence of respiratory diseases and cancer is 3-5 times higher than that of the general population.

[0008] In addition, traditional instruments have a single function and lack an integrated design, making them unable to simultaneously meet the complex requirements of precise reduction, dynamic stability, and smoke removal. In summary, there is an urgent need to develop a new type of pelvic fracture surgical instrument to provide a safer and more efficient solution for pelvic fracture treatment. Summary of the Invention

[0009] The purpose of the present invention is to provide a medical retraction device integrating lighting and smoke and blood suction functions and a manufacturing method thereof. It adopts an integrated structural design, integrating tissue retraction, lighting and smoke and blood suction functions, providing a safer and more efficient solution for the treatment of pelvic fractures.

[0010] To achieve the above objectives, the present invention provides a medical retractor device that integrates lighting and smoking blood-sucking functions, comprising a disposable retractor, a lighting handle, and a suction tube. The distal end of the disposable retractor is a retracting end, the proximal end of the disposable retractor is detachably connected to the distal end of the lighting handle, the proximal end of the lighting handle is a handheld end, the suction tube is disposed on the disposable retractor along its extension direction, the distal end of the suction tube is adjacent to the retracting end, and the proximal end of the suction tube is used to connect to a negative pressure suction device.

[0011] The disposable retractor is made of light-transmitting material and has a light guide window at its distal end. A light emitter is provided at the distal end of the lighting handle. Light emitted by the light emitter can enter the disposable retractor and radiate outwards radially through the light guide window.

[0012] Optionally, the disposable retractor is made of polycarbonate material and modified glass fiber through precision injection molding.

[0013] Optionally, the middle portion of the disposable retractor is bent to form a refraction angle, the refraction angle is greater than or equal to the total reflection angle of the disposable retractor, and the light output angle of the light guide window is less than the total reflection angle.

[0014] Optionally, the disposable retractor is provided with at least one clamping groove, which is provided near the distal end of the disposable retractor. The distal end of the suction tube is clamped into the clamping groove, and the proximal end is in contact with the surface of the disposable retractor.

[0015] Optionally, two groove walls located at the distal end of the clamping groove serve as the two light guide windows.

[0016] Optionally, the light-emitting body is a lamp bead and is arranged in the lighting handle. The lighting handle has a built-in battery, and the battery is used to power the lamp bead.

[0017] Optionally, a switch for controlling the battery to supply power to the lamp beads is provided at the proximal end of the lighting handle.

[0018] Optionally, the outer wall of the lighting handle is provided with anti-slip grooves or is covered with an anti-slip cover.

[0019] Based on the same inventive concept, the present invention also provides a method for manufacturing the medical retraction device integrating lighting and smoking and blood-sucking functions as described above, comprising the following steps:

[0020] Stirring and mixing polycarbonate and a light diffuser according to a set mass ratio to obtain a mixture;

[0021] processing the mixture into a melt;

[0022] mixing the modified glass fiber with the melt to obtain a mixed melt;

[0023] performing vacuum devolatilization on the mixed melt to obtain a polymer;

[0024] The polymer is treated by underwater hot-cutting granulation to obtain polymer particles;

[0025] Performing injection molding using the polymer particles to ultimately obtain the disposable retractor;

[0026] A lighting handle and a suction tube are provided, the proximal end of the disposable retractor is detachably connected to the distal end of the lighting handle, and the suction tube is installed on the disposable retractor along the extension direction of the disposable retractor.

[0027] Optionally, the preparation method of the modified glass fiber includes:

[0028] dissolving a silane coupling agent in a polar solvent to form a mixed liquid;

[0029] Add deionized water to the mixed solution, adjust the pH to 4-5, and stir and hydrolyze at room temperature for 30-40 minutes until the solution is transparent to obtain a silane solution;

[0030] Immersing the glass fiber in the silane solution to ensure that the surface of the glass fiber is completely wetted;

[0031] Drying the wetted glass fiber to allow the silane to condense with the hydroxyl groups on the surface of the glass fiber to form Si—O—Si bonds;

[0032] The wettability of the glass fiber surface is tested by a contact angle tester, and a contact angle of less than 30° is considered qualified.

[0033] In the medical retraction device and manufacturing method thereof provided by the present invention, which integrates lighting and smoking and blood suction functions, by integrating a disposable retractor, a lighting handle and a suction tube, on the one hand, it can provide good deep surgical field lighting and reduce the risk of surgery; on the other hand, it can aspirate the smoke and blood generated during the operation, improve the visibility of the surgical field and prevent the smoke from causing physical effects on medical personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0035] Figure 1 This is a schematic structural diagram of a medical retraction device integrating lighting and smoking and blood-sucking functions provided by one embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a disposable retractor provided in one embodiment of the present invention;

[0037] Figure 3 A schematic diagram of a refraction angle provided by an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of a light output angle provided by an embodiment of the present invention;

[0039] Figure 5 A visual simulation analysis diagram of the light guiding effect of a disposable retractor provided in one embodiment of the present invention;

[0040] Figure 6 This is a flow chart of a method for manufacturing a medical retraction device integrating lighting and smoking and blood-sucking functions provided by one embodiment of the present invention.

[0041] in:

[0042] 100-Disposable retractor; 110-Clamping groove; 111-Light guide window; 200-Illuminating handle; 210-Anti-slip groove; 300-Suction tube. DETAILED DESCRIPTION

[0043] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Any modification of the structure, change in the proportional relationship or adjustment of the size, under the condition that the effect produced by the present invention and the purpose that can be achieved are the same or similar, should still fall within the scope of the technical content disclosed by the present invention.

[0044] As used herein, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. As used herein, the term "or" is generally used in a sense including "and / or" unless the context clearly dictates otherwise.

[0045] Please refer to Figure 1 and Figure 2 This embodiment provides a medical retractor device that integrates lighting and smoking blood-sucking functions, including a disposable retractor 100, an illuminating handle 200, and a suction tube 300. The distal end of the disposable retractor 100 is a retracting end, and the proximal end of the disposable retractor 100 is detachably connected to the distal end of the illuminating handle 200. The proximal end of the illuminating handle 200 is a handheld end. The suction tube 300 is disposed on the disposable retractor 100 along its extension direction, with the distal end of the suction tube 300 close to the retracting end, and the proximal end of the suction tube 300 is used to connect to a negative pressure suction device.

[0046] The disposable retractor 100 is made of transparent light-guiding material and has a light-guiding window 111 at its distal end. A light-emitting body is provided at the distal end of the lighting handle 200. Light emitted by the light-emitting body can enter the disposable retractor 100 and radiate outward through the light-guiding window 111.

[0047] By integrating the disposable retractor 100, the lighting handle 200 and the suction tube 300, on the one hand, it can provide good deep surgical field illumination and reduce the risk of surgery. On the other hand, it can aspirate the smoke and blood generated during the operation, improve the visibility of the surgical field and prevent the smoke from causing physical effects on medical staff.

[0048] It should be noted that the definitions of "proximal" and "distal" in this article are: "proximal" usually refers to the end of the medical device that is close to the operator during normal operation, while "distal" usually refers to the end of the medical device that first enters the patient's body during normal operation.

[0049] Preferably, the disposable retractor 100 is made of medical-grade high-strength polycarbonate material and modified glass fiber through precision injection molding to ensure good light conductivity, mechanical properties and biocompatibility. The specific manufacturing method of the disposable retractor 100 will be described in detail later.

[0050] In this embodiment, Figure 3-Figure 4 As shown, the disposable retractor 100 has a bend in the middle to form a refraction angle α. The refraction angle α is greater than or equal to the total reflection angle of the disposable retractor 100, and the light output angle β of the light guide window 111 is less than the total reflection angle. It should be noted that the disposable retractor 100 adopts a V-shaped design, with the light entrance surface located at the connection with the lighting handle 200, the refraction surface located at the bend, and the light output surface located at the light guide window 111. The light is composed of multiple inclined or curved surfaces with different inclination angles. The inclination angle of each inclined or curved surface can be designed based on material properties and the law of refraction. Specifically, the refractive index of the injection-molded material of the disposable retractor 100 is set to a, and the refractive index of air is b; the total reflection angle c is obtained according to the law of refraction. Then, in order to ensure that the light can propagate along the extension direction of the disposable retractor 100 and converge at the light guide window 111 to diverge radially outward, it is necessary to ensure that the refraction angle α is greater than or equal to the total reflection angle c and the light output angle β of the light guide window 111 is less than the total reflection angle c.

[0051] The visual simulation analysis diagram of the light guiding effect of the disposable retractor 100 is as follows Figure 5 As shown in the figure, it can be seen that this is a visual simulation of the light propagation path, showing that the light enters the disposable retractor 100, a small part of it diverges directly outward, and most of it diverges to the surroundings from the light guide window 111. These colored lines (red, blue, green, etc.) represent the light propagation path. Since the light guide window 111 is set on the disposable retractor 100 and faces the surgical site, it can provide good deep surgical field illumination and reduce the risk of surgery.

[0052] In this embodiment, the distal end of the disposable retractor 100 is flat, so as to facilitate insertion into the tissue to be retracted, such as the gap between bones and muscles.

[0053] In this embodiment, the proximal end of the disposable retractor 100 is detachably connected to the distal end of the lighting handle 200. The detachable connection method not only facilitates the replacement of the disposable retractor 100, but also facilitates the installation, removal and replacement of components such as lamp beads and batteries in the lighting handle 200, making it more practical.

[0054] In this embodiment, the proximal end of the disposable retractor 100 is threadedly connected to the distal end of the lighting handle 200. For example, the proximal end of the disposable retractor 100 is processed with an internal thread, and the distal end of the lighting handle 200 is processed with a matching external thread. The present invention does not limit this. Of course, conventional detachable connection methods such as snap connection and plug-in connection can also be used, which will not be repeated here.

[0055] Preferably, the disposable retractor 100 is provided with at least one clamping groove 110, which is used to fix the suction tube 300. By fixing the suction tube 300 with the clamping groove 110, the suction tube 300 can be easily cleaned and replaced.

[0056] In this embodiment, a clamping groove 110 is positioned near the proximal end of the disposable retractor 100. The distal end of the suction tube 300 is inserted into the clamping groove 110, with the proximal end contacting the surface of the disposable retractor 100. It is understood that the length and clamping dimensions of the clamping groove 110 can be designed based on the dimensions of the suction tube 300. However, it must ensure a certain clamping force after insertion to prevent the suction tube 300 from being easily dislodged. Sufficient manual force is required to remove the suction tube 300 from the clamping groove 110. This embodiment illustrates only one design for the clamping groove 110. In other embodiments, multiple clamping grooves 110 may be provided, spaced apart along the extension direction of the disposable retractor 100. Furthermore, to further prevent the suction tube 300 from becoming loose, its proximal end may be secured to the disposable retractor 100 using a disposable cable tie.

[0057] It should be noted that the proximal end of the suction tube 300 is used to connect a negative pressure suction device, which is a prior art. Figure 1 The suction tube 300 can be used not only for sucking smoke but also for sucking blood, which is not limited in the present invention.

[0058] In this embodiment, the light-emitting body is a lamp bead and is disposed in the lighting handle 200. The lamp bead is, for example, an LED lamp bead, which is not limited in the present invention.

[0059] Preferably, the lighting handle 200 includes a built-in battery to power the light bulbs. The present invention does not limit the number or type of batteries; the battery can be selected based on actual needs. Using battery power not only ensures the overall integration of the device but also avoids the inconvenience of using a power cable.

[0060] In this embodiment, a switch for controlling the battery to supply power to the lamp beads is provided at the proximal end of the lighting handle 200. The lighting of the lamp beads can be controlled by manually pressing the switch, which is simple and convenient to operate.

[0061] Preferably, the outer wall of the lighting handle 200 is provided with anti-slip grooves 210 or covered with an anti-slip cover, so as to facilitate the surgical staff to perform hand-held operation, thereby reducing the risk of accidental drop of the medical retraction device during the operation.

[0062] Based on the same inventive concept, Figure 6 As shown, an embodiment of the present invention further provides a method for manufacturing the medical retraction device integrating lighting and smoking and blood-sucking functions as described above, comprising the following steps:

[0063] S1. Stirring and mixing polycarbonate and a light diffusing agent according to a set mass ratio to obtain a mixture;

[0064] S2, processing the mixture into a melt;

[0065] S3, mixing the modified glass fiber with the melt to obtain a mixed melt;

[0066] S4, performing vacuum devolatilization on the mixed melt to obtain a polymer;

[0067] S5, treating the polymer by underwater hot-cutting granulation to obtain polymer particles;

[0068] S6. Performing injection molding using the polymer pellets to ultimately obtain a disposable retractor 100;

[0069] S7. Provide an illuminating handle 200 and a suction tube 300, detachably connect the proximal end of the disposable retractor 100 to the distal end of the illuminating handle 200, and install the suction tube 300 on the disposable retractor 100 along the extension direction of the disposable retractor 100.

[0070] The disposable retractor 100 in this embodiment is essentially a preparation method of a polycarbonate (PC)-based light-diffusing composite material. Through multi-stage process optimization, a balance between high light transmittance (≥85%) (ASTM D1003) and low haze (≤10%) is achieved, while improving the mechanical properties of the material.

[0071] First, S1 is executed to stir and mix polycarbonate and light diffusing agent according to a set mass ratio to obtain a mixture.

[0072] Preferably, this embodiment uses optical grade PC resin with high fluidity (MFI 30-40g / 10min) and low yellowing index (such as Covestro 2405 or SABIC LEXAN TM 141R), its transmittance must be ≥88% (ASTM D1003), and the molecular weight must be controlled (weight average molecular weight 20,000-30,000) to balance processability and mechanical properties. Add 0.3%-0.5% silicone microspheres (such as Momentive 145), covering the fiberglass texture through uniform scattering. By matching the light diffuser with the PC resin, a synergistic improvement in light transmittance and haze is achieved.

[0073] For example, polycarbonate and light diffuser are added to a high-speed blender at a mass ratio of (95-98):(2-5) and mixed at a speed of 800-1200 rpm for 5-10 minutes to obtain the mixture. High-speed stirring achieves uniform dispersion and avoids uneven haze caused by phase separation during subsequent processing.

[0074] Then, step S2 is performed to process the mixture into a melt. In this embodiment, the mixture in step S1 is fed into a twin-screw extruder and processed into a melt at the front of the twin-screw extruder.

[0075] Then, step S3 is executed to mix the modified glass fiber with the melt to obtain a mixed melt. In this embodiment, the modified glass fiber and the melt are mixed in a ratio of 3:7.

[0076] Preferably, the modified glass fiber can be added from the side feed port of the twin-screw extruder and mixed with the melt in the front of the twin-screw extruder in S2. The fibers are evenly distributed through melt shearing, thereby enhancing the rigidity of the material and improving its strength.

[0077] In this embodiment, the modified glass fiber is an alkali-free glass fiber with a high refractive index (n≈1.58-1.59) (such as Japan Nittobo CSG3PA-820), and is surface treated with a silane coupling agent (KH-550 or KH-560) to make the refractive index difference between the glass fiber and the PC resin ≤0.02.

[0078] Specifically, the preparation method of the modified glass fiber includes:

[0079] S31, dissolving a silane coupling agent in a polar solvent to form a mixed solution;

[0080] S32, adding deionized water to the mixed solution, adjusting the pH to 4-5, stirring and hydrolyzing at room temperature for 30-40 minutes until the solution is transparent, to obtain a silane solution;

[0081] S33, immersing the glass fiber in the silane solution to ensure that the surface of the glass fiber is completely wetted;

[0082] S34, drying the wetted glass fiber to condense the silane with the hydroxyl groups on the surface of the glass fiber to form Si-O-Si bonds;

[0083] S35. Use a contact angle tester to test the wettability of the glass fiber surface. If the contact angle is less than 30°, it is qualified.

[0084] Specifically, S31 is first performed to dissolve a silane coupling agent in a polar solvent to form a mixed solution. The silane coupling agent is one or more of aminosilane (such as KH-550), epoxysilane (such as KH-560), or acrylate silane (such as KH-570). The polar solvent is, for example, methanol, which can both dissolve the silane and promote the hydrolysis reaction to form silanols.

[0085] Then execute S32, add deionized water to the mixed solution, adjust the pH to 4-5, stir and hydrolyze at room temperature for 30-40 minutes until the solution is transparent to obtain a silane solution. The hydrolysis time is adjusted according to the type of silane. For example, short-chain silanes (such as KH-171) have a fast hydrolysis rate, while long-chain silanes (such as KH-560) require a longer time. In this embodiment, the silane coupling agent, methanol, and deionized water are mixed in a ratio of 20%, 72%, and 8%. For non-amino silanes, a small amount of acetic acid (0.1%-0.5%) can be added to adjust the solution pH to 4-5.

[0086] Next, execute S33 to immerse the glass fiber in the silane solution to ensure that the glass fiber surface is completely wetted. Allow 5-10 minutes for the silane solution to fully penetrate the fiber bundle and form a uniform coating. Too short a time may result in untreated areas, while too long a time may trigger silane self-condensation (forming oligomers), reducing the effective coupling agent content.

[0087] Then, S34 is executed to dry the wetted glass fiber to condense the silane with the hydroxyl groups on the surface of the glass fiber to form Si-O-Si bonds. In this embodiment, the wetted glass fiber is dried at 120° C. for 2 hours to remove methanol and residual moisture. The silanol (Si-OH) and the hydroxyl groups (Si-OH) on the surface of the glass fiber form Si-O-Si bonds through a condensation reaction, forming a three-dimensional network structure and enhancing the stability of the surface coating.

[0088] Finally, execute S35 to test the wettability of the glass fiber surface using a contact angle tester. A contact angle of less than 30° indicates significantly improved hydrophilicity of the fiber surface and good wettability with the resin matrix. If the contact angle is greater than 30°, adjust the silane concentration or hydrolysis time.

[0089] The prepared modified glass fiber is mixed with the melt to obtain a mixed melt, and then S4 is performed to perform vacuum devolatilization on the mixed melt to obtain a polymer. In this embodiment, a double-stage vacuum (-0.095 MPa) is set to deeply remove moisture and oligomers (residue ≤ 0.02%) to reduce the increase in haze caused by bubbles.

[0090] In this embodiment, the twin-screw extruder adopts a five-stage temperature zone setting: feeding section 260-265°C, compression section 270-275°C, melting section 280-285°C, mixing section 285-290°C, and devolatilization section 275-280°C to avoid thermal decomposition of polycarbonate.

[0091] Then, S5 is executed to process the polymer using underwater hot-cutting granulation to obtain polymer particles. After the molten polymer is extruded through a die, it is cut into particles in an aqueous medium using a high-speed rotating cutter. The key to this stage is to achieve instantaneous solidification of the melt through rapid cooling of the water, forming particles with a smooth surface and uniform size. In this embodiment, underwater hot-cutting granulation is used at a water temperature of 60°C to obtain polymer particles with a particle diameter of 3 mm and a surface roughness Ra ≤ 1.6 μm.

[0092] Then, S6 is executed to perform injection molding using the polymer pellets to finally obtain the disposable retractor 100. In the injection molding stage, the polymer pellets obtained by underwater hot cutting are reheated and melted, injected into the mold cavity, and cooled to form, finally obtaining the disposable retractor 100 with the required shape and light transmittance requirements.

[0093] Finally, step S7 is performed to provide an illuminating handle 200 and a suction tube 300. The proximal end of the disposable retractor 100 is detachably connected to the distal end of the illuminating handle 200, and the suction tube 300 is installed on the disposable retractor 100 along its extension direction. In this embodiment, the illuminating handle 200 can be pre-processed from medical-grade plastic, and the suction tube 300 can be a commercially available product. The present invention does not modify or limit the manufacturing methods of the illuminating handle 200 and the suction tube 300.

[0094] In addition, this medical retraction device that integrates lighting and smoking and blood-sucking functions has been used in surgery with good results. It can adapt to surgical needs and does not damage or irritate human tissue. It conforms to ergonomic principles and is comfortable and long-lasting.

[0095] In summary, the embodiments of the present invention provide a medical retraction device that integrates lighting and smoking and blood suction functions, and a manufacturing method thereof. By integrating a disposable retractor 100, a lighting handle 200 and a suction tube 300 together, on the one hand, it can provide good deep surgical field lighting and reduce the risk of surgery. On the other hand, it can suck the smoke and blood generated during the operation, improve the visibility of the surgical field and prevent the smoke from causing physical effects on medical staff.

[0096] Furthermore, it should be recognized that although the present invention has been disclosed above with reference to preferred embodiments, the above embodiments are not intended to limit the present invention. Any person skilled in the art can utilize the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention, or modify it into equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A medical retraction device that integrates lighting and smoking blood-sucking functions, characterized in that: The device comprises a disposable retractor, an illuminating handle, and a suction tube. The distal end of the disposable retractor is a retracting end. The proximal end of the disposable retractor is detachably connected to the distal end of the illuminating handle. The proximal end of the illuminating handle is a handheld end. The suction tube is arranged on the disposable retractor along its extension direction, with the distal end of the suction tube close to the retracting end. The proximal end of the suction tube is used to connect to a negative pressure suction device. The disposable retractor is made of light-transmitting material and has a light guide window at its distal end. A light emitter is provided at the distal end of the lighting handle. Light emitted by the light emitter can enter the disposable retractor and radiate outwards radially through the light guide window.

2. The medical retraction device integrating lighting and smoking blood-sucking functions according to claim 1, characterized in that: The disposable retractor is made of polycarbonate material and modified glass fiber through precision injection molding.

3. The medical retraction device integrating lighting and smoking blood-sucking functions according to claim 1 or 2, characterized in that: The middle portion of the disposable retractor is bent to form a refraction angle, the refraction angle is greater than or equal to the total reflection angle of the disposable retractor, and the light output angle of the light guide window is less than the total reflection angle.

4. The medical retraction device integrating lighting, smoking and blood-sucking functions according to claim 1, characterized in that: The disposable retractor is provided with at least one clamping groove, which is arranged near the distal end of the disposable retractor. The distal end of the suction tube is clamped into the clamping groove, and the proximal end is in contact with the surface of the disposable retractor.

5. The medical retraction device integrating lighting and smoking blood-sucking functions according to claim 4 is characterized in that: The two groove walls located at the far end of the clamping groove serve as the two light guide windows.

6. The medical retraction device integrating lighting, smoking and blood-sucking functions according to claim 1, characterized in that: The light-emitting body is a lamp bead and is arranged in the lighting handle. The lighting handle has a built-in battery, and the battery is used to supply power to the lamp bead.

7. The medical retraction device integrating lighting and smoking blood-sucking functions according to claim 6, characterized in that: The proximal end of the lighting handle is provided with a switch for controlling the battery to supply power to the lamp beads.

8. The medical retraction device integrating lighting, smoking and blood-sucking functions according to claim 1 is characterized in that: The outer wall of the lighting handle is provided with anti-slip grooves or is covered with an anti-slip cover.

9. A method for manufacturing a medical retraction device integrating lighting and smoking blood-sucking functions according to any one of claims 1 to 8, characterized in that: The following steps are involved: Stirring and mixing polycarbonate and a light diffuser according to a set mass ratio to obtain a mixture; processing the mixture into a melt; mixing the modified glass fiber with the melt to obtain a mixed melt; performing vacuum devolatilization on the mixed melt to obtain a polymer; The polymer is treated by underwater hot-cutting granulation to obtain polymer particles; Performing injection molding using the polymer particles to ultimately obtain the disposable retractor; A lighting handle and a suction tube are provided, the proximal end of the disposable retractor is detachably connected to the distal end of the lighting handle, and the suction tube is installed on the disposable retractor along the extension direction of the disposable retractor.

10. The manufacturing method of the medical retraction device integrating lighting and smoking and blood-sucking functions according to claim 9, characterized in that: The preparation method of the modified glass fiber comprises: dissolving a silane coupling agent in a polar solvent to form a mixed liquid; Add deionized water to the mixed solution, adjust the pH to 4-5, and stir and hydrolyze at room temperature for 30-40 minutes until the solution is transparent to obtain a silane solution; Immersing the glass fiber in the silane solution to ensure that the surface of the glass fiber is completely wetted; The wetted glass fiber is dried to allow the silane to condense with the hydroxyl groups on the surface of the glass fiber to form Si—O—Si bonds.

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