CN110353763A - A kind of sheet soft tissue device for cutting - Google Patents

Abstract

The invention discloses a sheet soft tissue cutting device, which comprises a knife seat and a movable knife; the knife seat is a cuboid supporting shell with notches on the bottom and the right side, and vertical cutting knives are arranged at the bottom of each side, two A stop plate support is fixed between the parallel sides, and the right ends of the two parallel vertical cutting knives are processed with arc-shaped chamfers; The side guide rail is connected, and the slide bar is connected to the left side of the knife seat through a tension spring; the lower end of the movable knife is equipped with a horizontal cutting knife; the stop plate is connected to the stop plate support through a torsion spring, and the torsion spring stops in a free state The hooking part at the left end of the plate is engaged with the rear end of the extension spring; the vertical button connected with the top surface of the knife seat controls the turning of the stop plate and releases the extension spring. The cutting device of the present invention can quickly cut sheet soft tissue, and the cutting thickness is controllable.

Description

A kind of sheet soft tissue cutting device

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a device for obtaining sheet-shaped soft tissue of a human body.

Background technique

For gingival recession around natural teeth and insufficient keratinized gingiva around implants, it will cause inflammation around the periodontal and implants, leading to premature tooth loss and implant failure. Widening of keratinized gingiva is an effective solution to the above problems. Free gingival autografts from the hard palate are the gold standard for widening keratinized gingiva. At present, for the keratinized gingiva of the hard palate, a 15# blade is routinely used for peeling, and the keratinized gingiva with a thickness of 1.5mm×width 8mm×length 10-30mm is obtained. Because there is a lot of bleeding during the process of obtaining keratinized gingiva, which affects the doctor's surgical field of view, even for experienced doctors, the operation time takes about 4-6 minutes. Moreover, the thickness of the graft is the key to the effect of the operation. If the graft is too thick, there will be deep fat and glands, which often need to be removed, which will increase the operation time and increase postoperative discomfort. If the graft is too thin, it will not be easy to survive. Therefore, the current clinical problems in obtaining keratinized gingiva of the hard palate include: 1) poor vision and difficult operation; 2) uneven thickness, which affects postoperative results; 3) long operation time and large amount of blood loss, which increases postoperative discomfort for patients.

Therefore, there is a need for a device that is easy to operate, uniform in cutting thickness, and short in operation time to complete the cutting of sheet soft tissue.

Contents of the invention

The object of the present invention is to provide a rectangular parallelepiped soft tissue cutting device to solve the shortcomings of traditional surgical knives such as difficult operation, uneven cutting thickness, and long operation time in the operation of obtaining soft tissue with a fixed shape and thickness.

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

A sheet-shaped soft tissue cutting device of the present invention includes a knife seat, a movable knife, a stop plate support, a stop plate, a stop rod, an extension spring, a vertical button, a torsion spring and an extension spring connecting rod;

Described knife seat is the cuboid supporting shell of bottom surface and right side notch, and the bottom of three sides of knife seat is all provided with vertical cutting knives, and the blade of all vertical cutting knives is positioned at the same horizontal plane, and two knife seats are parallel to each other. The right end of the vertical cutting knife at the bottom of the side is processed with arc-shaped chamfers, and guide rails are respectively processed on the two parallel sides of the knife seat. The extension direction matches;

The upper end of the movable tool is a slide bar whose length matches the distance between the two parallel sides of the tool seat, and the two ends of the movable tool slide bar are positioning parts whose shape matches the width of the guide rail on the tool seat; Fix the horizontal cutting knife, the blade extension direction of the horizontal cutting knife is parallel to the slide bar;

A stop plate support is fixed between the two parallel sides of the knife seat, and the middle part of the stop plate is rotatably connected with the stop plate support, so that the stop plate turns left and right around the stop plate support, and the left end of the stop plate There is a hook connecting part extending downward; the top surface of the knife seat is connected to the vertical button, and the lower end of the vertical button is separated from the stop plate in the free state, and a torsion spring is installed at the connection between the stop plate and the stop plate support, and the torsion spring is free Press down to make the left end of the stop plate turn downwards, press the vertical button to make the left end of the stop plate turn up and separate from the stop rod; the sliding rod of the movable tool passes through the positioning parts at both ends and the two guide rails Connection, under the constraints of two guide rails, the upper surface of the blade of the horizontal cutting knife is always close to the blade of the vertical cutting knife at the bottom of the two parallel sides of the knife seat; the sliding bar of the movable knife passes through two parallel tension spring connecting rods It is connected with the right ends of the two extension springs, the left end of the two extension springs is connected with the left side of the tool seat, and the connecting rods of the two extension springs are connected by a stop bar;

In the locked state, the sliding bar of the movable tool moves to the rightmost end along the guide rail of the tool seat, the vertical button is lifted up, the left end of the stop plate is turned down, and the hooking part at the left end of the stop plate is locked with the stop bar, and the movable The tool is limited.

When the knife is cutting, align the three vertical cutting knives of the knife seat with the position to be cut, and press down on the knife seat so that the three vertical cutting knives form a vertical cut at the position to be cut; then press the vertical button to make the vertical Press the straight button down on the right end of the stop plate, and the left end of the stop plate will turn up and get out of the stop bar to release the limit on the movable tool; Slide to the left so that the horizontal cutting knife of the movable knife first cuts down and then cuts horizontally to the left until the horizontal cutting knife cuts to the vertical cutting knife set on the left side of the knife seat, and the tissue to be cut is obtained. Before the cutter is used again, the slide bar of the movable cutter is moved to the rightmost end along the guide rail of the cutter seat, and the hooking portion at the left end of the stop plate is re-engaged with the stop rod, so that the movable cutter is reset.

Beneficial effect

The cutting device of the present invention integrates the surgical cutting steps, has a simple structure, is easy to operate, shortens the operation time, and reduces the postoperative discomfort of the patient; The cutting thickness is controllable, and the thickness uniformity is good, and soft tissue with uniform thickness is conducive to the survival of soft tissue; the cutting device of the present invention can be applied to obtain sheet soft tissue in the oral cavity and other body parts, and is used for keratinized gingiva grafting in the oral cavity or other Soft tissue transplantation, the postoperative effect is good.

Description of drawings

Fig. 1 is the overall structural representation of cutting device of the present invention;

Fig. 2 is the right side view of cutting device of the present invention;

Fig. 3 is the top view of cutting device of the present invention;

Fig. 4 is a schematic diagram of the locking state of the cutting device of the present invention;

Fig. 5 is a schematic diagram of the unlocked state of the cutting device of the present invention;

In the figure: 1-knife seat; 2-extension spring; 3-vertical cutting knife; 4-guide rail; 5-torsion spring; 6-vertical button; 7-stop plate support; 8-horizontal cutting knife; 9 -slide bar; 10-extension spring connecting rod; 11-stop plate; 12-stop rod.

Detailed ways

The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example

As shown in Figures 1, 2, and 3, a sheet-shaped soft tissue cutting device includes a knife seat 1, a movable knife, a stop plate support 7, a stop plate 11, a stop rod 12, a tension spring 2, and a vertical button 6. Torsion spring 5, extension spring connecting rod 10;

Described knife seat 1 is the cuboid supporting shell of bottom surface and right side notch, and the bottom of three sides of knife seat 1 is all provided with vertical cutting knives, and the blade of all vertical cutting knives is positioned at the same horizontal plane, and knife seat 1 two The right ends of the vertical cutting knives at the bottom of the two parallel sides are all processed with arc-shaped chamfers, and guide rails 4 are respectively processed on the two parallel sides of the knife holder 1, and the extending direction of the two guide rails is vertical to the bottom of the side where they are located. The blade extension direction of the straight cutting knife matches;

The upper end of the movable tool is a slide bar 9 whose length matches the distance between two sides parallel to each other of the tool holder 1, and the two ends of the movable tool slide bar 9 are positioning parts whose profile matches the width of the guide rail on the tool holder 1; The bar 9 fixes the horizontal cutting knife 8 through the connecting rod, and the blade extension direction of the horizontal cutting knife 8 is parallel to the slide bar 9;

A stop plate support 7 is fixed between the two parallel sides of the knife seat 1, and the middle part of the stop plate 11 is rotatably connected with the stop plate support 7, so that the stop plate 11 is turned left and right around the stop plate support 7 , the left end of the stop plate 11 extends downwards with a hook; the top surface of the knife holder 1 is connected to the vertical button 6, and the lower end of the vertical button 6 is separated from the stop plate 11 in the free state, and the stop plate 11 and the stop plate A torsion spring 5 is installed at the joint of the support 7, and the torsion spring 5 is in a free state so that the left end of the stop plate 11 is turned downwards, and the vertical button 6 presses the stop plate 11, so that the left end of the stop plate 11 is turned upwards, and the left end of the stop plate 11 is turned upwards, and the stop rod 12 separation; the slide bar 9 of the movable tool is connected with the two guide rails of the knife holder 1 through the positioning parts at both ends, and under the restraint of the two guide rails, the upper surface of the blade of the horizontal cutting knife 8 is always close to the knife holder 1 and the two are parallel to each other. The blade of the vertical cutting knife at the bottom of the side; the slide bar 9 of the movable knife is connected with the right end of the two extension springs 2 through two extension spring connecting rods 10 parallel to each other, and the left end of the two extension springs 2 is connected with the left side of the knife holder 1 Connection, two extension spring connecting rods 10 are connected by a stop rod 12;

In the locked state, the slide bar 9 of the movable tool moves to the rightmost end along the guide rail 4 of the tool holder 1, the vertical button 7 is lifted upwards, the left end of the stop plate 11 is turned downward, and the hooking part at the left end of the stop plate 11 is connected with the stop The rod 12 is clamped to limit the movable tool, as shown in Figure 4.

When the knife is cutting, align the three vertical cutting knives of the knife seat 1 with the position to be cut, and press down on the knife seat 1 so that the three vertical cutting knives form a vertical cut at the position to be cut; then press the vertical button 6 , so that the vertical button 6 presses down the right end of the stop plate 11, the left end of the stop plate 11 turns upwards and leaves the stop bar 12, and releases the limit to the movable cutter, as shown in Figure 5; Under the action of tension, the movable knife slides to the left along the guide rail 4 of the knife seat 1 through the slide bar 9, so that the horizontal cutting knife 8 of the movable knife first cuts downwards and then cuts horizontally to the left until the horizontal cutting knife 8 cuts to the knife seat 1 When the vertical cutting knife is set on the left side, the acquisition of the tissue to be cut is completed. Before the tool is used again, the slide bar 9 of the movable tool is moved to the rightmost end along the guide rail 4 of the tool holder 1, and the hooking part at the left end of the stop plate 11 is re-engaged with the stop bar 12, so that the movable tool is reset.

Claims (1)

1. a kind of sheet soft tissue device for cutting, it is characterized in that: including tool apron, movable cutter, stop board support, check plate, stopping Lever, tension spring, vertical button, torsional spring and tension spring connecting rod；

The tool apron is the cuboid supporing shell of bottom surface and right side side notch, and the bottom of three sides of tool apron is provided with Vertical cutter, the blade of all vertical cutter are located at same level, two side bottoms that are parallel to each other of tool apron it is vertical The right end end of cutter is machined with circular arc chamfering, is machined with guide rail on two sides being parallel to each other of tool apron respectively, and two The blade extending direction of the extending direction and the vertical cutter of place side bottom of guide rail matches；

Movable cutter upper end is the slide bar that length and the tool apron two side spacing being parallel to each other match, movable cutter slide bar Both ends are shape and the positioning region that tool apron upper rail width matches；The slide bar of movable cutter is fixed by the connecting rod horizontal resection The blade extending direction of knife, horizontal cutting cutter is parallel with slide bar；

Stop board support is fixed between two sides that are parallel to each other of tool apron, the middle part of check plate and the rotation of stop board support connect It connects, overturns check plate around stop board support or so, the left end of check plate has extended downwardly the portion of linking；The top surface connection of tool apron is perpendicular Straight button, the lower end of vertical button is separated with check plate under free state, check plate and stop board support junction installation torsional spring, Downwardly turn over check plate left end, vertical button pressed downwards check plate, so that check plate left end is to turning over Turn, is separated with arresting lever；The slide bar of movable cutter is connected by the positioning region at both ends and two guide rails of tool apron, in two guide rails Constraint under so that the blade upper surface of horizontal cutting cutter is close to two vertical cutter of the side bottom that is parallel to each other of tool apron always Blade；The slide bar of movable cutter is connect by two tension spring connecting rods being parallel to each other with the right end of two tension springs, two tension springs Left end is connect with tool apron left lateral sides, is connected between two tension spring connecting rods by arresting lever；

Under lock state, the slide bar of movable cutter moves to right end along the guide rail of tool apron, and vertical button is lifted up, check plate Left end downwardly turns over, and check plate left end links portion and arresting lever detent, limits to movable cutter.