A precise acromion shaping positioner under arthroscopy

Abstract

The present invention relates to an arthroscopic precise acromion shaping positioner, comprising a front positioning arm, a rear positioning arm, a one-way threaded sleeve, and a guide pin. The head of the front positioning arm is hinged with the head of the rear positioning arm, a tape measure is installed in the front positioning arm, a metal ring is installed at the free end of the tape measure, a clamp is hinged at the tail of the rear positioning arm, a one-way screw hole is provided in the clamp, a conical positioning hook is provided at the tail of the front positioning arm, and when the front positioning arm and the rear positioning arm are closed, the central axis of the conical positioning hook is in line with the central axis of the one-way screw hole; the one-way threaded sleeve is screwed with the one-way screw hole, and the guide pin is inserted into the one-way threaded sleeve. The beneficial effects are: 1. The guide pin is precisely penetrated from the body surface into the required position of the lower surface of the acromion in the surgical field of view by using the tapered positioning hook and the one-way threaded sleeve, so as to realize the precise positioning mark of the positioning point of the lower surface of the acromion during the operation; 2. The distance is measured under arthroscopy by using the tape measure, the metal ring, and the guide pin, so as to improve the accuracy of the osteotomy range.

Description

Technical Field

[0001] The invention relates to the field of orthopedic sports medicine and the technical field of arthroscopic surgical tools, and in particular to an arthroscopic precise acromion shaping positioner. Background Art

[0002] At present, the precise acromion plasty under arthroscopy is performed by marking the acromion shape on the body surface, measuring and marking the positioning points of the acromion osteotomy range, and then inserting the puncture needle through the skin into the endoscopic field of view at the positioning points, so as to determine the range of osteotomy required for surgery through the puncture needle under the microscope. There are the following problems: it is highly subjective due to the experience of different surgeons; and the process is relatively cumbersome. There is a certain error in locating the positioning points on the lower surface of the acromion through the skin on the body surface, which may lead to inaccurate osteotomy range. Summary of the invention

[0003] The purpose of the present invention is to overcome the above problems existing in the prior art and to provide an arthroscopic precise acromion shaping positioner.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A precise acromion shaping positioner under arthroscopy comprises a front positioning arm, a rear positioning arm, a one-way threaded sleeve and a guide needle. The head of the front positioning arm is hinged with the head of the rear positioning arm. A tape measure is installed in the front positioning arm. A metal ring exposed below the front positioning arm is installed at the free end of the tape measure. A clamp is hinged at the tail of the rear positioning arm. A one-way screw hole is provided in the clamp. A conical positioning hook is provided at the tail of the front positioning arm facing the rear positioning arm. When the front positioning arm and the rear positioning arm are closed, the central axis of the conical positioning hook is colinear with the central axis of the one-way screw hole. The one-way threaded sleeve is threadedly connected to the one-way screw hole, and the guide needle is inserted into the one-way threaded sleeve.

[0006] Furthermore, the head of the one-way threaded sleeve is provided with a V-shaped opening.

[0007] Furthermore, the clamp includes two semicircular clamp arms, one end of the clamp arm is provided with a first hinge ring, the tail of the rear positioning arm is provided with a second hinge ring, the first hinge ring and the second hinge ring are hinged by a hinge shaft, and the hinge shaft is sleeved with a disc spring clamped between the first hinge ring and the second hinge ring.

[0008] Furthermore, the front positioning arm is in an arc shape, and the rear positioning arm is in a straight line shape.

[0009] Furthermore, the conical positioning hook is a cone or a pyramid.

[0010] Furthermore, the measuring tape is a clockwork measuring tape.

[0011] The beneficial effects of the present invention are: 1. The conical positioning hook and the one-way threaded sleeve are used in combination to enable the guide needle to accurately penetrate from the body surface to the required position of the lower surface of the acromion in the surgical field of view, thereby realizing accurate positioning marking of the positioning point of the lower surface of the acromion during surgery; 2. The tape measure, metal ring, and guide needle are used in combination to realize distance measurement under arthroscopy, thereby improving the accuracy of the osteotomy range. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 is a schematic diagram of the structure of a positioner in an embodiment of the present invention;

[0014] Figure 2 yes Figure 1 The structural diagram of the enlarged part A in the middle;

[0015] Figure 3 It is a schematic structural diagram of the rear positioning arm and the clamp assembly in an embodiment of the present invention;

[0016] Figure 4 It is a structural schematic diagram of a one-way threaded sleeve in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0018] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] like Figures 1 to 4As shown in the figure, an arthroscopic precise acromion shaping locator includes a front positioning arm 1, a rear positioning arm 2, a one-way threaded sleeve 3, and a guide pin 4. The head of the front positioning arm 1 is hinged to the head of the rear positioning arm 2, that is, the head of the front positioning arm 1 and the head of the rear positioning arm 2 are hinged with a rotating shaft. A tape measure 6 is installed in the front positioning arm 1, and a metal ring 7 exposed below the front positioning arm 1 is installed at the free end of the tape measure 6. A clamp 8 is hinged at the tail of the rear positioning arm 2, and a one-way screw hole 10 is provided in the clamp 8. A conical positioning hook 5 is provided on the side of the tail of the front positioning arm 1 facing the rear positioning arm 2. When the front positioning arm 1 and the rear positioning arm 2 are closed, the central axis of the conical positioning hook 5 is colinear with the central axis of the one-way screw hole 10; the one-way threaded sleeve 3 is threadedly connected to the one-way screw hole 10, and the guide pin 4 is inserted into the one-way threaded sleeve 3.

[0020] The conical positioning hook and one-way threaded sleeve are used together to make the guide needle penetrate accurately from the body surface to the required position of the lower surface of the acromion in the surgical field of view, so as to realize the precise positioning marking of the positioning point of the lower surface of the acromion during the operation; the tape measure, metal ring and guide needle are used together to realize the distance measurement under arthroscopy, so as to improve the accuracy of the osteotomy range.

[0021] A V-shaped opening 11 is provided at the head of the one-way threaded sleeve 3 .

[0022] The clamp 8 includes two semicircular clamp arms 9, one end of the clamp arm 9 is provided with a first hinge ring 12, the tail of the rear positioning arm 2 is provided with a second hinge ring 13, the first hinge ring 12 and the second hinge ring 13 are hinged through a hinge shaft 14, and the hinge shaft 14 is sleeved with a disc spring 15 clamped between the first hinge ring 12 and the second hinge ring 13.

[0023] The front positioning arm 1 is arc-shaped, and the rear positioning arm 2 is straight-line-shaped.

[0024] The conical positioning hook 5 is a cone. In addition, the conical positioning hook 5 may be a pyramid.

[0025] The measuring tape 6 is a clockwork measuring tape, a cavity 16 is provided in the front positioning arm 1, and the clockwork measuring tape is installed in the cavity 16.

[0026] Operation procedure: After cleaning the lower surface of the acromion under arthroscopy, insert the anterior positioning arm 1 into the subacromial space through the access route, and place the conical positioning hook 5 at the positioning point A on the lower surface of the acromion; completely close the anterior and posterior arms, insert the one-way threaded sleeve 3 into the one-way screw hole 10 so that the head of the one-way threaded sleeve 3 is pressed tightly against the patient's skin; insert the guide needle 4 into the one-way threaded sleeve 3, and use an electric drill to drill the guide needle 4 from the patient's body surface so that the guide needle 4 passes through the subacromial positioning point A in the surgical field; open the clamp to disengage the one-way threaded sleeve from the one-way screw hole; put the metal ring 7 on the tip of the guide needle that has been drilled into the patient's acromion, pull out the tape measure 6 under the microscope to measure the distance and determine the positioning point B, place the tip of the conical positioning hook at the positioning point B, and repeat the above steps to insert the second guide needle; insert subsequent guide needles as needed, determine the osteotomy line under the microscope according to the positioning point determined by the guide needle, and perform precise acromion shaping.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An arthroscopic precise acromion shaping positioner, characterized by: The invention comprises a front positioning arm, a rear positioning arm, a one-way threaded sleeve and a guide needle. The front positioning arm is in an arc shape, the rear positioning arm is in a straight line shape, and the head of the front positioning arm is hinged with the head of the rear positioning arm; a tape measure is installed in the front positioning arm, the tape measure is a clockwork tape measure, and a metal ring exposed below the front positioning arm is installed at the free end of the tape measure; a clamp is hinged at the tail of the rear positioning arm, a one-way screw hole is provided in the clamp, and the clamp comprises two semicircular clamp arms, one end of the clamp arm is provided with a first hinge ring, and the tail of the rear positioning arm is provided with a The second hinge ring, the first hinge ring and the second hinge ring are hinged by a hinge shaft, and the hinge shaft is sleeved with a disc spring clamped between the first hinge ring and the second hinge ring; a conical positioning hook is provided at the tail of the front positioning arm facing the side of the rear positioning arm, and the conical positioning hook is a cone or a prism. When the front positioning arm and the rear positioning arm are closed, the central axis of the conical positioning hook is colinear with the central axis of the one-way screw hole; a V-shaped opening is provided at the head of the one-way threaded sleeve, the one-way threaded sleeve is threadedly connected to the one-way screw hole, and the guide needle is inserted into the one-way threaded sleeve.

Images