TWM680562U - Tissue retractor - Google Patents

Abstract

This disclosure relates to a tissue retractor. The tissue retractor comprises: a handle, which has a first end and a second end; a retraction portion, which has a third end, a fourth end, and a main body portion extending between the third and fourth ends, wherein the fourth end of the retraction portion is provided with a tongue extending from the main body portion along a longitudinal direction of the retraction portion, and the thickness of the main body portion is greater than that of the tongue; a connecting portion, which connects the second end of the handle to the third end of the retraction portion; and a conduit, which is hollow, entering from the outer side of the third end of the retraction portion, extends through the main body portion, and terminates with an open end at a surface of the main body portion adjacent to the fourth end.

Description

Tissue support

This disclosure relates to a tissue retractor, particularly a tissue retractor used in breast augmentation surgery.

Tissue retractors are medical instruments commonly used in surgical procedures. Their main function is to separate, fix, stretch, or pull tissues (such as skin, muscles, and organs) so that surgeons can clearly see and manipulate the surgical area. With the development of minimally invasive surgery, traditional retractors are not suitable for small incisions or body cavities. Therefore, tissue retractors combined with endoscopic catheters have been developed. In addition to stretching and separating tissues to create surgical space, they can further guide an endoscope into the tissue, allowing surgeons to observe or manipulate the tissue simultaneously.

Figures 1A and 1C illustrate a tissue retractor 10 used in breast augmentation surgery. The tissue retractor 10 includes a handle 12, a retractor portion 16, and connecting portions 14 at both ends connecting the handle 12 and the retractor 16, respectively. The retractor portion 16 is generally elongated, and its front edge has a tongue 18. During operation, a user can grasp the handle 12 to apply force, using the tongue 18 to insert the retractor portion 16 into the tissue. Because the connecting portion 14 is U-shaped, as the retractor portion 16 enters the tissue, the user can pull the handle 12 to retract the tissue.

The tissue retractor 10 has a sleeve 22 below the connection portion 14 where it engages with the retractor portion 14. As shown in Figures 1B and 1C, the sleeve 22 has an opening 24 at one end opposite the tongue 18 of the retractor portion 16 for receiving the objective lens 104 of the endoscope 100. When the retractor is inside the tissue, the objective lens 104 can pass through the sleeve 22 into the tissue. The inner diameter of the sleeve 22 matches the outer diameter of the endoscope barrel 106 of the endoscope 100; the inner diameter of the sleeve 22 may be slightly larger than the outer diameter of the endoscope barrel 106, so that the endoscope barrel 106 of the endoscope 100 can slide within the sleeve 22 without excessive shaking. The aforementioned sleeve 22 may have a fixing device 20 at the opening 24 to fix the endoscope 100.

As mentioned above, the tissue retractor 10, perhaps to facilitate its extension into the tissue, has a long, plate-like retractor portion 16. The retractor portion 16 is the part that directly bears force when retracting the tissue; to ensure it has sufficient strength, the width of the retractor portion 16 is approximately 30 mm. The width of the retractor 16 determines the length of the incision during surgery; an excessively long incision not only leads to slow recovery but can also cause keloid formation, affecting the aesthetics of the wound. Furthermore, due to its geometric structure, the strength is limited, and the length of the retractor portion 16 is approximately 140 mm. Therefore, the incision for breast augmentation surgery using the tissue retractor 10 will be made at the lower edge of the breast, and the scar from this incision may cause an unpleasant appearance.

Furthermore, although the tissue retractor 10 guides the endoscope 100 into the tissue, it does not provide protection for the endoscope tube 106 or objective lens 104 after extending into the tissue. The endoscope 100 is easily damaged during operation (as is well known, surgical endoscopes are quite expensive).

Therefore, the industry urgently needs a tissue retractor with a narrower retractor section to reduce the length of the incision, and with a longer length to allow for incisions in less noticeable areas (such as the armpit). Furthermore, the tissue retractor should ideally protect the portion of the endoscope inserted into the tissue during insertion.

To this end, this disclosure provides a tissue opener comprising: a handle having a first end and a second end; an opener having a third end, a fourth end, and a body portion extending between the third end and the fourth end, the fourth end of the opener having a tongue extending from the body portion along the length direction of the opener, the thickness of the body portion being greater than the tongue; a connecting portion connecting the second end of the handle and the third end of the opener; and a hollow sleeve that enters from the outside of the third end of the opener and extends through the body portion, terminating and opening at one end face of the body portion adjacent to the fourth end.

Furthermore, this disclosure provides a tissue stretcher comprising: a handle having a first end and a second end; a stretcher having a third end, a fourth end, and a body portion extending between the third end and the fourth end, the fourth end of the stretcher having a tongue extending from the body portion along the length of the stretcher, the body portion being thicker than the tongue, wherein the second end of the handle is connected to the third end of the stretcher, such that the tissue stretcher is generally L-shaped; and a hollow tube that enters from the outside of the third end of the stretcher and extends into the body portion, and terminates and opens at one end face of the body portion adjacent to the fourth end.

The foregoing has provided a fairly broad overview of the technical features of this disclosure, so as to facilitate a better understanding of the detailed description of this disclosure below. Other technical features constituting the subject matter of this disclosure will be described below. Those skilled in the art to which this disclosure pertains will understand that the concepts and specific embodiments disclosed below can be readily used to modify or design other structures or methods to achieve the same purpose as this disclosure. Those skilled in the art to which this disclosure pertains will also understand that such equivalent constructions cannot depart from the spirit and scope of this disclosure as defined by the appended claims.

The following disclosure provides numerous different embodiments or examples for implementing various features of the provided object. Specific examples of elements and configurations will be described below to simplify this disclosure. Of course, these are merely examples and are not intended to be limiting. For example, in the following description, "forming a first component above or on a second component" may include embodiments in which the first and second components are in direct contact, and may also include embodiments in which additional components may be formed between the first and second components such that the first and second components are not in direct contact. Furthermore, element symbols and/or letters may be repeated in various embodiments of this disclosure. This repetition is intended for simplification and clarity and does not in itself indicate a relationship between the various embodiments and/or configurations discussed.

Furthermore, for ease of description, spatial relative terms (such as "below," "below," "down," "above," "upper," "above," and similar terms) are used herein to describe the relationship between one element or component and another element(s), as illustrated in the figures. In addition to the orientations depicted in the figures, spatial relative terms are also intended to cover different orientations of the device during use or operation. The device may be oriented in other ways (rotated 90 degrees or otherwise), and the spatial relative descriptors used herein can be interpreted accordingly.

As used herein, terms such as “first,” “second,” and “third” describe various elements, components, regions, layers, and/or segments, but these elements, components, regions, layers, and/or segments should not be limited by these terms. These terms may be used only to distinguish elements, components, regions, layers, or segments from one another. Unless clearly indicated herein, the terms such as “first,” “second,” and “third” used herein do not imply a sequence or order.

As used herein, the terms “approximately,” “substantially,” “essentially,” and “about” are used to describe and explain small variations. When used in conjunction with an event or condition, the terms may refer to instances in which the event or condition occurred precisely, as well as instances in which the event or condition occurred very close to it. For example, when used in conjunction with a numerical value, the terms may refer to a range of variation less than or equal to ±10% of that value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%. For example, if the difference between two values is less than or equal to ±10% of the average of those equal values (such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%), then those equal values can be considered "substantially" the same or equal. For example, "substantially" parallelism can involve an angular variation of less than or equal to ±10° relative to 0°, such as less than or equal to ±5°, less than or equal to ±4°, less than or equal to ±3°, less than or equal to ±2°, less than or equal to ±1°, less than or equal to ±0.5°, less than or equal to ±0.1°, or less than or equal to ±0.05°. For example, "substantially" vertical can refer to an angle variation of less than or equal to ±10° relative to 90°, such as less than or equal to ±5°, less than or equal to ±4°, less than or equal to ±3°, less than or equal to ±2°, less than or equal to ±1°, less than or equal to ±0.5°, less than or equal to ±0.1°, or less than or equal to ±0.05°.

For ease of understanding, unless otherwise specified, the terms "above," "below," "higher than," or "lower than" in this document refer to the relative relationship between the upper surface 216 and the lower surface 218 of the stretching portion 250 of the tissue stretcher 200. For example, the handle 202 shown in Figure 2A is located above the stretching portion 250. Other terms such as "horizontal" and "vertical" also have similar relative relationships.

Please now refer to Figures 2A to 2I, which illustrate a tissue stretcher 200 according to an embodiment of the present disclosure. The tissue stretcher 200 includes a handle 202, a stretching portion 250, and a connecting portion 204 for connecting the handle 202 and the stretching portion 250. Specifically, the handle 202 has a first end and a second end, the stretching portion 250 has a third end and a fourth end, and the connecting portion 204 connects the second end of the handle 202 and the third end of the stretching portion 250. The stretching portion 250 includes a body portion 214 extending between the third end and the fourth end, and the fourth end of the stretching portion 250 has a tongue 220 extending from the body portion 214 along the length direction L of the stretching portion 250. The tongue 220 is the outermost part of the tissue stretcher 200 entering the tissue. It can have any configuration to facilitate its extension into the tissue. According to one embodiment of this disclosure, the tongue 220 can be flat, arc-shaped, or spindle-shaped (with a apex angle at the outermost point). The body portion 214 is thicker than the tongue 220 and can accommodate the sleeve 212 therein. The hollow sleeve 212 enters from the outer side of the third end of the stretcher 250 and extends through the body portion 214, generally terminating at or slightly protruding from the end face 222 of the body portion 214 near the fourth end. The end face 222 is preferably a curved surface located below the tongue 220 and curving inward.

Because the thickness of the body portion 214 is greater than that of the tongue portion 220, the width of the tongue portion 220 (in the width direction W) can be slightly greater than the width of the body portion 214 in order to allow the tongue portion 220 to smoothly guide the body portion 214 into the tissue. In addition, the tongue portion 220 extends from the upper surface 216 of the body portion 214 and curves downward, so that when viewed along the length direction L, the tongue portion 220 can cover a portion of the width of the body portion 214.

To accommodate the sleeve 212 within the body portion 214, a metal strip is provided, which forms the portion from the upper surface 216 of the support portion 250 to the tongue 220. The sleeve 212 is fixed and encased therein by providing molten metal solder. The lower edge of the metal solder encasing the sleeve 212 forms the lower surface 218 of the body portion 214. The lower surface 218 curves downwards along the width direction of the support portion 250 and forms an arc at its lowest point, allowing the sleeve 212 to be accommodated within the space enclosed by the lower surface 218. Furthermore, the upper surface 216 can be a plane or a curved surface that curves upwards along the width direction of the support portion 250, with the radius of curvature of the upper surface 216 being larger than that of the lower surface. This configuration facilitates the insertion of the support portion 250 into the structure. The metal strip constituting the support portion 250 and the metal solder can be made of the same material, such as medical-grade 316 stainless steel.

As can be seen in Figures 2B and 2E, the cannula 212 has an inner diameter that matches or is slightly larger than the outer diameter of the endoscope tube 106 of the endoscope 100, and has a length that generally matches the length of the endoscope tube 106 of the endoscope 100. Therefore, during the process of the endoscope 100 entering the tissue, it can extend within the cannula 212 enclosed in the body portion 214, thereby preventing damage to the endoscope due to contact with the tissue. As shown in Figures 2G and 2H, the sleeve 212 has an opening 224 at its end face 222. When the endoscope 100's barrel 106 is positioned within the sleeve 212/body portion 214, the objective lens 104 of the endoscope 100 can be approximately flush with the opening 224, slightly recessed within the opening 224, or protruding beyond the opening 224, but not protruding beyond the leading edge of the tongue 220, thus effectively protecting the endoscope 100. When the objective lens 104 enters the tissue, the user can observe the internal condition of the tissue through the endoscope 100's eyepiece 102. The eyepiece 102 can also be an information cable connected to an imaging system.

The tissue stretcher 200 can be operated by gripping the handle 202 or by gripping the connecting part 204. For this purpose, the tissue stretcher 200 may further include a rod 210 to provide a stable grip when the user grips the connecting part 204 and the rod 210 as a whole. One end of the rod 210 is connected to the second end near the handle 202, and the other end is connected to the third end near the stretcher 250; or the rod may be arranged across the U-shaped structure of the connecting part 204. Preferably, the distance between the rod 210 and the third end of the stretcher 250 is greater than the distance between the rod 210 and the second end of the handle 202.

As shown in Figure 2A, the tissue retractor 200 may include a first catheter 206 and a second catheter 208. The first catheter 206 and the second catheter 208 enter from the first end of the handle 202 and extend into the handle 202, and extend through the connecting portion 204 and the body portion 214, and are generally open at the proximal end face 222 (i.e., an opening is provided at the fourth end of the retractor portion 250). The first catheter 206 and the second catheter 208 can be used to connect to a device to aspirate or inject fluid; for example, in the course of surgery, an electrocautery knife may be used to cut or cauterize blood vessels to stop bleeding, and the first catheter 206 and the second catheter 208 can be used to connect to a device to aspirate the smoke generated during the electrocautery process. Alternatively, one of the first conduit 206 and the second conduit 208 may be used to introduce a cleaning fluid (such as saline solution), while the other of the first conduit 206 and the second conduit 208 may be used to draw in the cleaning fluid.

The first guide tube 206 and the second guide tube 208 may have openings on the upper surface 216 or lower surface 218 of the body portion near the end face 222, or multiple openings may be opened on the lower surface 218 along the length of the body portion 214. As shown in Figures 2G and 2H, the openings 226 and 228 of the first guide tube 206 and the second guide tube 208 are preferably opened on the end face 222. The advantage of this arrangement is that suction can be limited to the space formed by the tongue 220 and the end face 222, avoiding direct contact between the openings 226 and 228 with the tissue, thus preventing tissue damage caused by suction. The sleeve 212, the first guide tube 206, and the second guide tube 208 may be parallel to each other in the body portion 214, and the first guide tube 206 and the second guide tube 208 are symmetrically arranged with respect to the sleeve 212. The cross-sectional view of the main body portion 214 in Figure 2I shows the relative arrangement of the first guide tube 206 and the sleeve 212 within the main body portion 214.

Referring now to Figures 2B to 2F, the tissue retractor 200 may include an endoscope fixation mechanism 300. The endoscope fixation mechanism 300 is disposed on the outer side of the third end of the retractor 250. The endoscope fixation mechanism 300 includes a sleeve 310, with an opening 316 of the sleeve 212 opening inside the sleeve 310 and facing the open end 312 of the sleeve 310, allowing the objective lens 104 and the endoscope tube 106 of the endoscope 100 to enter the sleeve 212 along the open end 312 of the sleeve 310. The sleeve 310 is preferably coaxially disposed with the sleeve 212. The open end 312 has an inner contour of the lens module housing 110 that can accommodate the endoscope 100. In addition, the endoscope fixing mechanism 300 includes a fastener 306, which can be used to fix the endoscope 100 to the endoscope fixing mechanism 300.

As can be seen in Figures 2B and 2C, the lens module housing 110 of the endoscope 100 typically has a quadrilateral outer contour with rounded corners. Therefore, the open end 312 of the sleeve 310 is preferably provided with a quadrilateral inner contour with rounded corners. In addition, the open end 312 of the sleeve 310 has a groove 314 along one side of the quadrilateral facing the sleeve 212. The groove 314 has a width that approximately matches the diameter of the light guide tube 108 of the endoscope 100, and the bottom of the groove 314 has an arc that approximately matches the outer circumference of the light guide tube, so as to allow the light guide tube 108 to enter the groove 314 and be placed at the bottom of the groove 314. One end of the fastener 306 is operably fixed to a post 318 protruding from the outer periphery of the sleeve 310. The other end of the fastener 306 (i.e., the latching end 308) has an arc that roughly matches the outer periphery of the light guide tube 108, so that when the light guide tube 108 of the endoscope 100 is accommodated in the groove 314, the fastener 306 can be operated to latch the light guide tube 108 of the endoscope 100, thereby fixing the light guide tube 108 in the groove 314.

The fastener 306 is preferably made of a long strip of material and is an operating fastener 306. The end of the fastener 306 that is fixed to the sleeve 310 has a U-shaped groove 304, and the fastener 306 is operably fixed to the post 318 by means of a pin 302 passing through the U-shaped groove 304, so that the fastener 306 can move and rotate relative to the pin 302 along the U-shaped groove 304. In the state shown in Figure 2E, pin 302 is located on one side of U-groove 304. At this time, the latching end 308 does not contact the light guide tube 108 during operation (or can contact the light guide tube within the elastic limit of fastener 306); while in the state shown in Figure 2F, pin 302 is located on the other side of U-groove 304. At this time, the latching end 308 contacts the light guide tube 108, so that the light guide tube 108 does not disengage from groove 314.

Referring now to Figures 3A to 3C, the tissue retractor 200 may include a removable support 400. During the insertion of the tissue retractor 200 into the tissue, the support 400 may not be installed for ease of operation. However, once the tissue retractor 200 has reached the desired position, the user's hands may need to leave the tissue retractor 200 to perform other surgical procedures. At this point, the support 400 can be installed onto the tissue retractor 200, allowing the user to rest the support 400 against their lower back or abdomen for support and to proceed with subsequent surgery.

For mounting the bracket 400, the sleeve 212 of the tissue spreader 200 has a bracket fixing mechanism 230 on its outer periphery near the outer side of the third end of the spreading portion 250, by means of which the bracket 400 can be detachably fixed to it. According to one embodiment of the present disclosure, the bracket fixing mechanism 230 is a rectangular block attached to the outer periphery of the sleeve 212, the rectangular block having two symmetrical faces along the length L of the spreading portion 250.

The support 400 has a support block 402 at one end, an abutment portion 422 at the other end, and a long rod portion 424 extending between the support block 402 and the abutment portion 422. The abutment portion 422 provides a flat surface so that the support 400 does not cause discomfort to the user when it rests against the user. The long rod portion 424 has an appropriate length so that when the support 400 rests against the user, there is an appropriate distance between the user and the tissue into which the support portion 250 enters, allowing the user to perform procedures conveniently. The support block 402 has a first clamping plate 426 extending from its upper surface 428 and a second clamping plate 420 detachably attached to the support block 402. The first clamping plate 426 and the second clamping plate 420 are configured to operably clamp the two symmetrical faces of the rectangular block of the bracket fixing mechanism 230. When the first clamping plate 426 and the second clamping plate 420 clamp the rectangular block of the bracket fixing mechanism 230, the upper surface 428 of the support block 402 abuts against the rectangular block of the bracket fixing mechanism 230.

According to one embodiment of this disclosure, in order to ensure that the relative position of the support block 402 and the bracket fixing mechanism 230 does not change after clamping, a corresponding tenon mechanism may be provided between the support block 402 and the bracket fixing mechanism 230. For example, at least one of the two symmetrical faces of the rectangle has at least one hole 232, and at least one of the first clamping plate 426 and the second clamping plate 420 of the support block 402 has at least one protrusion 404 corresponding to the at least one hole 232. When the first clamping plate 426 and the second clamping plate 420 clamp the rectangle, the protrusion 404 is accommodated in the hole 232, so that the support block 402 cannot be detached from the bracket fixing mechanism 230. Preferably, each of the first clamping plate 426 and the second clamping plate 420 has two protrusions 404, and each of the two symmetrical faces of the rectangle has two holes 232. However, it should be noted that the protrusions can be provided on the rectangle, while the corresponding holes are provided on the clamping plates.

The support block 402 has at least one guide hole 406 and a threaded hole 410 for receiving a guide pin 414 on one surface facing the second clamping plate 420, for example, having two guide holes 406 symmetrically arranged with respect to the threaded hole 410. The guide pin 414 is disposed on the side of the second clamping plate 420 facing the support block 402, for example, by a screw 416 passing through a hole 408 in the second clamping plate 420 opposite to the support block 402 and extending into the guide pin 414 to secure the guide pin 414 to the second clamping plate 420. The hole 408 is preferably a countersunk hole so that the screw 416 does not protrude from the plane of the second clamping plate 420. The guide pin 414 can enter the guide hole 406 (the diameter between them can be a sliding fit or a loose fit). The second clamping plate 420, which is fixed with the guide pin 414, can slide along the guide hole 406 toward the support block 402. After the second clamping plate 420 is slid to align with the corresponding tenon mechanism and held in the desired position, the threaded hole 410 can be used to receive the bolt 418 extending through the hole 412 of the second clamping plate 420 to fix the second clamping plate 420 on the support block 402 to clamp the bracket fixing mechanism 230.

Figures 4A to 4D illustrate a bracket 500 according to another embodiment of this disclosure. The difference between bracket 500 and bracket 400 is that the long rod portion 510 of bracket 500 has a telescopic mechanism. According to one embodiment of this disclosure, the long rod portion of bracket 500 includes a first long rod portion 506 and a second long rod portion 508, which are slidable relative to each other and fixed in a desired position. For example, the first long rod portion 506 has at least one elongated slot 504, and the first long rod portion 506 can be fixed to the second long rod portion 508 by at least one fastener 502 passing through the elongated slot 504 of the first long rod portion 506. Preferably, the first long rod portion 506 has two parallel elongated slots 504, each allowing a fastener 502 to pass through. As can be seen in Figure 4C, based on the length design of the elongated slots 504, the long rod portion 510 can extend or retract within a distance D.

Figure 5 illustrates another embodiment of the tissue retractor 600 disclosed herein. The tissue retractor 600 has a retractor portion 250, a sleeve 212, an endoscope fixation mechanism 300, and a support fixation mechanism 230, similar to those of the tissue retractor 200. The difference lies in that the tissue retractor 600 does not have a connecting portion; instead, one end of the handle 602 is directly fixed to the end of the retractor portion 250 opposite to the tongue 220. The handle 602 and the retractor portion 250 of the tissue retractor 600 are generally L-shaped, although the angle between the handle 602 and the retractor portion 250 is not necessarily 90 degrees. The tissue stretcher 600 may also have a third guide tube 604 and a fourth guide tube 606, which can enter the tissue stretcher 600 from the end of the handle 602 until they open on the end face 222 of the stretching part 250. The handle 602 may have an ergonomic shape suitable for holding.

The tissue retractor disclosed in this case has a retractor portion 250 with strength far exceeding that of conventional techniques, allowing the width of the retractor portion to be less than 25mm, for example, between 25mm and 15mm. For example, the width of the retractor portion can be approximately 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, or 25mm. Compared to conventional retractors with a retractor portion width of approximately 30mm, the retractor disclosed herein can significantly reduce the length of surface wounds, which is highly beneficial for postoperative healing and preventing scarring. Furthermore, the tissue retractor disclosed herein can be up to 300mm in length, for example, approximately 300mm, 290mm, 280mm, 270mm, 260mm, 250mm, 240mm, 230mm, 220mm, 210mm, 200mm, 190mm, 180mm, 170mm, 160mm, and 150mm. Given that the average female breast diameter is approximately 12-16 cm, the tissue retractor disclosed herein allows for the incision to be made at any desired location during breast augmentation surgery, including but not limited to the lower edge of the breast, the armpit, and/or the areola.

10: Tissue expander 12: Handle 14: Connector 16: Expander 18: Tongue 20: Fixing device 22: Sleeve 100: Endoscope 102: Eyepiece 104: Objective lens 106: Lens tube 108: Light guide tube 110: Lens module housing 200: Tissue expander 202: Handle 204: Connector 206: First guide tube 208: Second guide tube 210: Rod 212: Sleeve 214: Main body 216: Upper surface 218: Lower surface 220: Tongue 222: End face 224: Opening 226: Opening 228: Opening 230: Support fixing mechanism 232: Hole; 250: Supporting part; 300: Endoscope fixing mechanism; 302: Pin; 304: U-shaped groove; 306: Fastener; 308: Snap-on end; 310: Sleeve; 312: Opening end; 314: Groove; 316: Opening; 318: Column; 400: Bracket; 402: Support block; 404: Protrusion; 406: Guide hole; 408: Hole; 410: Threaded hole; 412: Hole; 414: Guide pin; 416: Screw; 418: Bolt; 420: Second clamping plate; 422: Abutting part; 424: Long rod part; 426: First clamping plate; 428: Upper surface; 500: Bracket; 502: Fastener; 504: Long groove. 506: First long bar section 508: Second long bar section 510: Long bar section 600: Tissue stretcher 602: Handle 604: Third guide tube 606: Fourth guide tube D: Distance L: Length direction W: Width direction

The nature of this disclosure will be further understood from the following embodiments, together with the accompanying drawings. It should be noted that, according to industry standard practice, the various features are not drawn to scale. In fact, for clarity, the dimensions of the various features may be arbitrarily enlarged or reduced.

Figures 1A to 1C show three-dimensional schematic diagrams of a learned tissue stretcher.

Figures 2A to 2H show three-dimensional schematic diagrams of a tissue stretcher of an embodiment disclosed herein.

Figure 2I shows a partial cross-sectional side view of the tissue stretcher of the aforementioned embodiment.

Figures 3A to 3C show three-dimensional schematic diagrams of the tissue stretcher of the aforementioned embodiment, which further includes the support of an embodiment disclosed herein.

Figures 4A and 4B show three-dimensional schematic diagrams of a support according to another embodiment of the present disclosure.

Figure 4C shows a side view of the support structure of another embodiment mentioned above.

Figure 4D shows a three-dimensional schematic diagram of the support installed on the tissue stretcher in another embodiment mentioned above.

Figure 5 shows a three-dimensional schematic diagram of another embodiment of the tissue stretcher disclosed herein.

200: Tissue Support

202: Grip

204: Connecting Parts

206: First Conductor

208: Second catheter

210: Pole

212: Sleeve

214: Main Body

216: Upper surface

218: Lower surface

220: Tongue

222: End Face

230: Bracket Fixing Mechanism

232: Hole

250: Support Section

300: Endoscopic fixation mechanism

L: Length direction

W: Width direction

Claims (31)

A tissue expander includes: a handle having a first end and a second end; a expander having a third end, a fourth end, and a body portion extending between the third end and the fourth end, the fourth end of the expander having a tongue extending from the body portion along the length direction of the expander, the thickness of the body portion being greater than the tongue portion; a connecting portion connecting the second end of the handle and the third end of the expander; and a hollow sleeve that enters from the outside of the third end of the expander and extends through the body portion, terminating and opening at one end face of the body portion adjacent to the fourth end. For example, the tissue stretcher in claim 1, wherein the tongue is flat, arc-shaped, or spindle-shaped. For example, the tissue stretcher in request item 1, wherein the connection is U-shaped. The tissue expander of claim 1 further includes: a first guide tube and a second guide tube, the first guide tube and the second guide tube entering from the first end of the handle and extending into the handle, and extending through the connection and the body portion to open near the end face. For example, the tissue expander of claim 4, wherein the sleeve, the first guide tube and the second guide tube are parallel to each other in the body portion, and the first guide tube and the second guide tube are arranged symmetrically with respect to the sleeve. As in claim 1, the structure expander has an upper surface and a lower surface, the lower surface being curved downward along the width of the expander and arc-shaped at its lowest point, such that the sleeve is accommodated in the space enclosed by the lower surface. For example, the tissue stretcher of claim 6, wherein the upper surface bends upward and protrudes along the width direction of the stretching portion, and the radius of curvature of the upper surface is greater than the radius of curvature of the lower surface. Such as the tissue stretcher in claim 6, wherein the tongue extends from the upper surface of the body portion and curves downward. For example, the tissue stretcher of claim 8, wherein the end face of the body portion is a curved surface located below the tongue and curved inward. As in claim 1, the organization expander, wherein the connecting part has a rod, one end of which is connected to the second end and the other end of which is connected to the third end. Such as the organization expander in claim 3, wherein the connecting part has a rod that spans the U-shaped structure of the connecting part. For example, the organization opener of claim 11, wherein the distance between the rod and the third end of the opener is greater than the distance between the rod and the second end of the handle. As in claim 1, the tissue expander has an endoscope fixing mechanism at the outer side of the third end of the expander portion of the sleeve. The endoscope fixing mechanism includes: a sleeve, wherein one opening of the sleeve is provided inside the sleeve and opens toward one open end of the sleeve, and wherein the open end has an inner contour of a lens module housing for receiving an endoscope; and a fastener configured to fix the endoscope to the endoscope fixing mechanism. Such as the tissue stretcher in claim 13, wherein the sleeve is coaxially disposed with the tube. As in claim 13, the open end of the sleeve has an inner quadrilateral profile with the four corners of the quadrilateral being R-angles, wherein the open end of the sleeve has a groove along one side of the quadrilateral facing the sleeve, and wherein the groove has a width matching the diameter of one of the light guide tubes of the endoscope, and the bottom of the groove has an arc matching the outer circumference of the light guide tube. As in claim 15, the tissue opener, wherein one end of the fastener is operably fixed to a post protruding from the outer periphery of the sleeve, and the other end of the fastener (306) has an arc that matches the outer periphery of the light guide tube, such that when the light guide tube of the endoscope is received in the groove, the light guide tube of the endoscope can be fixed in the groove by operating the fastener. As in claim 16, the fastener is made of a long strip of material and has a U-shaped groove at one end of the sleeve. The fastener is operably fixed to the post by a pin passing through the U-shaped groove. The fastener is movable relative to the pin along the U-shaped groove. As in claim 1, the sleeve has a support fixing mechanism on its outer periphery near the outer side of the third end of the opening portion, configured to allow a support to be detachably fixed thereon. As in claim 18, the structure expander, wherein the support fixing mechanism is a rectangular block attached to the outer periphery of the sleeve, the rectangular block having two symmetrical faces along the length of the expander, and wherein the support has a bearing block at one end, an abutment at the other end, and a long rod extending between the bearing block and the abutment, the bearing block having a first clamping plate extending from its upper surface and a second clamping plate detachably attached to the bearing block, the first clamping plate and the second clamping plate being configured to operably clamp the two symmetrical faces of the rectangular block, and when the first clamping plate and the second clamping plate clamp the rectangular block, the upper surface of the bearing block abuts against the rectangular block. As in claim 19, the structure stretcher, wherein at least one of the two symmetrical faces of the rectangle has at least one hole, and at least one of the first and second clamping plates of the support block has at least one protrusion corresponding to the at least one hole. The structure support of claim 19, wherein the bearing block has at least one guide hole and a threaded hole for receiving a guide pin on one surface of the second clamping plate, the guide pin being secured to the second clamping plate, the threaded hole being configured to receive a bolt extending through one of the second clamping plates. Such as the tissue stretcher in claim 19, wherein the long rod portion of the support has a telescopic mechanism. The organization stretcher of claim 22, wherein the telescopic mechanism includes a first long rod portion and a second long rod portion respectively attached to the support block and the abutment portion, the first long rod portion having at least one elongated slot, and wherein the support further includes at least one fastener that passes through the at least one elongated slot of the first long rod portion to secure the first long rod portion to the second long rod portion. Such as the tissue stretcher in claim 1, wherein the stretcher has a width of less than 25 mm. Such as the tissue stretcher in claim 1, wherein the stretcher has a width greater than 15 mm. Such as the tissue stretcher in claim 1, wherein the stretcher has a length of less than 300 mm. Such as the tissue stretcher in claim 1, wherein the stretcher has a length greater than 150 mm. As in claim 1, the tissue stretcher, wherein the tongue of the stretcher has a width greater than that of the body portion. Such as the tissue expander in claim 1, wherein the sleeve has an inner diameter that matches the outer diameter of the endoscope barrel. Such as the tissue expander in claim 1, wherein the sleeve has a length that matches the barrel of an endoscope. A tissue stretcher includes: a handle having a first end and a second end; a stretching portion having a third end, a fourth end, and a body portion extending between the third end and the fourth end, the fourth end of the stretching portion having a tongue extending from the body portion along the length direction of the stretching portion, the thickness of the body portion being greater than the tongue portion, wherein the second end of the handle is connected to the third end of the stretching portion, such that the tissue stretcher is generally L-shaped; and a hollow sleeve that enters from the outside of the third end of the stretching portion and extends into the body portion, and terminates and opens at one end face of the body portion adjacent to the fourth end.