CN102100574B - Minimally invasive light knife - Google Patents

Abstract

The invention belongs to the field of medical instruments, and particularly relates to a minimally invasive light knife. The minimally invasive light knife consists of a minimally invasive light knife body and a guide card, wherein the minimally invasive light knife body consists of a knife handle (1), a knife seat (2) and a knife blade (3); a light source system consisting of a light-emitting diode (12), a battery (13) and a push type switch (14) in turn from right to left is arranged in the knife seat (2); the life blade (3) is arranged in a groove (5) of the knife seat (2); a guiding end (6) and a handle end (7) of the guide card are positioned at an upper height and a lower height, and a transition section (8) is arranged between the guiding end and the handle end; the guide card is provided with a supporting blade (11); the guiding end (6) of the guide card is provided with a guiding groove (9); and the handle end (7) is provided with an anti-slip groove (10). By using the minimally invasive light knife, brachial plexus nerve block anesthesia is not required to be performed, the operative incision is only 1 centimeter, the tissue damage is small, the incision is not needed to be sewn, and hospitalization is not needed, so the minimally invasive light knife has the characteristics of safety, convenience and economy, and is mainly used for carpal tunnel syndrome operations.

Description

Minimally Invasive Light Knife

Technical field: the invention belongs to the field of medical equipment, in particular to a minimally invasive light knife.

Background technology: Clinically, carpal tunnel syndrome is a disease that makes patients very painful. It occurs frequently in office workers who operate computers and other manual workers. In patients with carpal tunnel syndrome, the median nerve is compressed in the carpal tunnel, causing numbness, tingling or burning pain in the radial side of the thumb, index finger, middle finger and ring finger, which is aggravated at night after working during the day, and even wakes up during sleep; local pain often Radiation to the elbow and shoulder; poor abductor muscle strength of the thumb, atrophy of the thenar muscle in the hand, and occasional sudden loss of the hand when lifting objects. The traditional surgical treatment method is to cut longitudinally along the skin lines of the palm and wrist. The incision is from the palm to above the wrist, and the incision is more than 5 cm. After the skin is cut, the transverse carpal ligament is cut to release the compressed nerve. Traditional surgical incisions are long and the wound surface is large. Brachial plexus block anesthesia is required. The operation time is long and there are many postoperative complications. Patients have scars on the exposed areas of the hands after surgery, and some patients even form painful keloids, which is painful. Discomfort seriously affects the appearance, because many patients need to be hospitalized at the same time, and the medical expenses are also high.

Summary of the invention: The purpose of the present invention is to overcome the long incision and large wound surface of traditional carpal tunnel syndrome surgery, the need for brachial plexus block anesthesia, long operation time, many postoperative complications, and high medical expenses due to the need for hospitalization. High technical defects, to provide people with a small surgical incision, small wound, short operation time, no need for brachial plexus block anesthesia, safe, convenient and economical new minimally invasive light knife for carpal tunnel syndrome surgery .

The purpose of the present invention is achieved through the following technical solutions.

The minimally invasive optical knife of the present invention is composed of a minimally invasive optical knife main body and a guide piece, the minimally invasive optical knife main body is composed of a handle 1, a knife seat 2 and a blade 3, and the handle 1, the knife seat 2 and the blade 3 are connected in sequence, A light source system is arranged in the knife handle 1 , the blade 3 is arranged in the groove 5 of the knife seat 2 , and the guide piece is composed of a guide end 6 and a handle end 7 .

In the above solution, the guide end 6 and the handle end 7 of the guide sheet can be on the same horizontal plane, but it is better that the guide end 6 and the handle end 7 are at different heights up and down, and a transition section 8 is arranged in the middle.

In the above solution, the guide end 6 of the guide piece is provided with a guide groove 9 , and the handle end 7 is provided with an anti-slip groove 10 .

In the above solution, the guide piece is provided with a supporting vane 11 .

In the above solution, the light source system is composed of light-emitting diodes 12 , batteries 13 , and push-type switches 14 from right to left, and the push-type switches 14 are arranged at the rear end of the handle 1 .

In the above solution, the connecting section between the knife handle 1 and the knife seat 2 is an arc-shaped transition section 15 .

In the above solution, the curvature P of the front end of the handle 1 is 15 degrees.

In the above solution, there may be an arrow mark 16 in the direction of the blade on the handle 1 .

In the above solution, the rear end of the handle 1 is provided with an anti-slip groove 4 for the handle.

The present invention is a scientific and practical technical solution that the inventor has explored repeatedly through practice. Compared with the prior art, the present invention has the following characteristics: 1. The handle is lengthened, and an anti-skid groove is designed at the tail end of the handle, so that it is not easy to slip during use. 2. Equipped with a disposable surgical guide piece, which overcomes the disadvantages of high price and inconvenient use of two additional stainless steel devices in the past. 3. The front and rear diameters of the knife seat are consistent to prevent the knife head from slipping out. It overcomes the problem that the existing tool seat has a small front diameter and a large rear diameter, and it is easy to slide out forward during operation. 4. The existing knife holder has a right-angled circular edge, which is easy to damage the tissue. The connection between the knife holder and the handle of this product is designed to be smooth or arc-shaped transition, which can effectively prevent tissue damage. 5. The curvature P at the top of the handle 1 is set to 15 degrees, which is more convenient for operation. 6. The existing knob-type switch is on the same plane as the knife handle, and it is easy to turn off the light by mistake during operation. Now the top push-type switch is used to prevent the mistakenly turn off the light during operation. 7. An arrow indicating the direction of the blade is added to the handle of the knife, and the direction of the knife edge is clear, making the operation safer. The minimally invasive light knife of the present invention adopts micro-incision incision technology, does not need brachial plexus block anesthesia, does not need to do large-scale skin incision, and the surgical incision is only 1 cm. Because of its own light source, it can be released and incised Accurate, with matching knife handle chute, can avoid damage to the median nerve, damage to surrounding tissues is also small, no need to suture the incision, no need to be hospitalized. Compared with traditional surgery, it is safer, more convenient and economical. The products are mainly used in carpal tunnel syndrome surgery.

The present invention is further described by the following examples, but the present invention is not limited to the examples.

Description of drawings:

Fig. 1 is a schematic diagram of the main structure of the minimally invasive light knife of the present invention.

Fig. 2 is a schematic structural view of the surgical guide sheet.

In the figure: 1. Knife handle; 2. Knife holder; 3. Blade; 4. Anti-slip groove of knife handle; 5. Groove; 6. Guide end; 7. Handle end; 8. Transition section; 9. Guide groove; 10 .Anti-skid groove; 11. Support blade; 12. Light-emitting diode; 13. Battery; 14. Push switch; 15. Arc transition section; 16. Arrow mark;

Detailed ways:

As shown in Figure 1 and Figure 2: the minimally invasive optical knife of the present invention is made of two parts, the main body of the minimally invasive optical knife and the guide piece, and the main body of the minimally invasive optical knife is composed of a handle 1, a knife seat 2 and a blade 3, the handle 1, The knife holder 2 and the blade 3 are connected in sequence, the handle 1 is provided with a light source system, the blade 3 is arranged in the groove 5 of the knife holder 2, and the guide piece can be divided into a guide end 6 and a handle end 7 . The blade 3 of this example is a scalpel with a length of 3 millimeters and a concave edge. This example knife seat 2 is made up of transparent resin for garden angle rectangle, and blade 3 is embedded on the knife seat 2. The leading end 6 of the leading piece can extend into the incision to provide a favorable space environment for the operation of the blade 3 , while the handle end 7 of the leading piece is generally located outside the human body for controlling the operation of the leading end 6 .

As shown in Figure 2: the guide end 6 and the handle end 7 of the guide piece described in this example can be on a horizontal plane, that is, a straight guide piece, but the guide piece with this structure is not conducive to operation. Therefore, it is preferable that the leading end 6 and the handle end 7 are at different heights up and down, and a transition section 8 is arranged in the middle. The inclination angle of the transition section 8 can be designed arbitrarily, preferably a vertical transition. The guide sheet described in this example is also provided with supporting blades 11, which function to open the surgical incision and facilitate operation. The position of the supporting blades 11 is preferably near the transition section 8 to play the role of a triangular support frame in the past. The shape of the blade described in this example can also be designed arbitrarily.

As shown in FIG. 2 : the guide end 6 of the guide piece described in this example is provided with a guide groove 9 , and the handle end 7 is provided with an anti-slip groove 10 . The function of the guide groove 9 is to provide a wider space for the operation of the blade 3 . The guide nozzle 17 of the guide end 6 of the guide piece can also be an inclined surface on the top of the platform.

As shown in Figure 1: In this example, the handle 1 is a conical cylindrical object, which contains LED light-emitting diodes 12, batteries 13, springs and connection systems. switch 14. As shown in the figure: the light source system consists of light-emitting diodes 12, batteries 13, and push switches 14 from right to left.

As shown in Fig. 1 : the connection section between the knife handle 1 and the knife seat 2 in this example is an arc-shaped transition section 15, and this structure can effectively prevent tissue damage. The front and rear diameters of the handle 1 described in this example are consistent in size, and can also be designed arbitrarily. In the figure, the curvature P of the front end of the handle 1 of this example is 15 degrees. The handle 1 is provided with an arrow mark 16 for the direction of the blade. The rear end of the handle 1 is provided with an anti-skid groove 4 for the handle.

The present invention is further illustrated by the description of the working principle below: the minimally invasive light knife enters the tissue near the subcutaneous carpal tunnel by means of the operation guide sheet, and the cold light emitted by the light-emitting diode 12 positioned at the front end of the knife handle 1 is transmitted through the transparent resin knife holder 2 to illuminate on the one hand. After entering the surgical field, on the one hand, it is mapped to the body surface through the skin, showing the body surface projection position of the carpal tunnel ligament. The surgery is over.

Claims (7)

1. A minimally invasive light knife, consisting of two parts, a minimally invasive light knife main body and a guide plate, is characterized in that the minimally invasive light knife main body is made of a handle (1), a knife holder (2) and a blade (3), and the handle (1 ), the knife seat (2) and the blade (3) are connected in turn, the light source system is arranged in the handle (1), the blade (3) is arranged in the groove (5) of the knife seat (2), and the guide piece is guided by the guide end (6) and handle end (7) constitute, and described light source system is made up of LED (12), battery (13), push-type switch (14) successively from right to left, and its push-type switch (14) The contact point (18) is arranged at the rear end of the knife handle (1), and the cold light emitted by the light emitting diode (12) at the front end of the knife handle (1) is conducted through the transparent resin knife holder (2). 2. The minimally invasive light knife according to claim 1, characterized in that the leading end (6) and the handle end (7) of the guide plate are at different heights up and down, and a transition section (8) is arranged in the middle. 3. The minimally invasive light knife according to claim 1 or 2, characterized in that a guide groove (9) is provided on the guide end (6) of the guide piece, and an anti-slip groove (10) is provided at the handle end (7). 4. The minimally invasive light knife according to claim 2, characterized in that a supporting blade (11) is provided near the transition section (8) of the guide sheet. 5. The minimally invasive light knife according to claim 1, characterized in that the connecting section between the knife handle (1) and the knife seat (2) is an arc-shaped transition section (15). 6. The minimally invasive light knife according to claim 1, characterized in that the curvature P of the front end of the handle (1) is 15 degrees. 7. The minimally invasive optical knife according to claim 1, characterized in that the handle (1) is provided with an arrow indicating the direction of the blade (16), and the rear end of the handle (1) is provided with a handle anti-slip groove (4 ).

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