Arthroscopic anterior cruciate ligament stump measuring instrument

Abstract

The utility model relates to the technical field of medical apparatus and instruments, in particular to an arthroscope anterior cruciate ligament stump measuring instrument which comprises an arthroscope connecting block, an arthroscope tube is installed on one side of the arthroscope connecting block, a sliding cavity is formed in the arthroscope tube, a reset spring rope is installed in the sliding cavity, a piston pad is installed in the sliding cavity, and the piston pad is connected with the arthroscope connecting block. One end of the reset spring rope is connected with one side of a piston pad, a measuring tube is installed on one side of the piston pad, scale marks are arranged on the outer side of the measuring tube, a connecting tube is installed on the outer side of the mirror tube, and a telescopic air tube is installed at one end of the connecting tube. According to the utility model, the mirror tube extends into the body of a patient, and the sliding cavity is formed in the mirror tube, so that the shape characteristic of the mirror tube is not changed, the minimization of the wound area of the patient is ensured, and the effect of the original minimally invasive surgery is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an arthroscopic anterior cruciate ligament stump measuring instrument. Background Art

[0002] An arthroscope is a rod-shaped optical instrument for observing the internal structure of a joint. It is an endoscope used to diagnose and treat joint diseases. An arthroscope is needed when using tranexamic acid in anterior cruciate ligament reconstruction. The arthroscope is equipped with a lens at the end of a thin tube. When the thin tube is inserted into the joint, the internal structure of the joint will be displayed on the monitor. Therefore, the internal structure of the joint can be directly observed. Arthroscopy is not only used for the diagnosis of diseases, but has also been widely used in the treatment of joint diseases.

[0003] After searching, the Chinese patent authorization announcement number CN216454937U, announcement date May 10, 2022, discloses an arthroscopic anterior cruciate ligament stump measuring instrument. The article proposes that "when the doctor inserts the camera 5 on the end face through the arthroscopic channel tube 1 to observe the ligament stump and needs to measure, the space formed by the piston 13 and one end of the guide tube 8 is inflated through the air guide tube 11 by squeezing the hand-held air cylinder 9, so that the piston 13 and the connected thin push-pull rod 14 can be moved downward in the guide tube 8, and the transparent plastic wire 6 with the scale line 7 can be inserted horizontally downward, and the inserted part of the scale line 7 is brought into close contact with the ligament stump, thereby having the function of measuring the size of the ligament stump, and the size number is read out through the camera 5 at the same time."

[0004] However, the arthroscopic body designed in the above-mentioned practical application changes the shape characteristics of the existing arthroscopy, and the arthroscopic body is irregular in shape, and the specific size is unclear, which results in the need to enlarge the size of the opening on the patient's body during use, resulting in a reduction in the effect of minimally invasive surgery and a prolonged recovery time for the patient after surgery.

[0005] This article proposes an arthroscopic anterior cruciate ligament stump measurement instrument. Utility Model Content

[0006] The purpose of the utility model is to provide an arthroscopic anterior cruciate ligament stump measuring instrument to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an arthroscopic anterior cruciate ligament stump measuring instrument, comprising an arthroscopic connecting block, a mirror tube is installed on one side of the arthroscopic connecting block, a sliding cavity is opened inside the mirror tube, a reset spring rope is installed inside the sliding cavity, a piston pad is installed inside the sliding cavity, one end of the reset spring rope is connected to one side of the piston pad, a measuring tube is installed on one side of the piston pad, scale lines are provided on the outside of the measuring tube, a connecting tube is installed on the outside of the mirror tube, and a telescopic air tube is installed on one end of the connecting tube.

[0007] Preferably, an air relief valve is installed on the outer side of the connecting pipe, and a knob is installed on one side of the air relief valve.

[0008] Preferably, a light source tube is installed at the bottom of the arthroscopic connecting block, and a speculum connecting seat is installed at one side of the arthroscopic connecting block.

[0009] Preferably, one end of the sliding cavity passes through the interior of the mirror tube, and the thickness of the mirror tube is 2 mm.

[0010] Preferably, the measuring tube is transparent, and has four scale lines, which are respectively located around the measuring tube.

[0011] Preferably, the interior of the connecting pipe is communicated with the interior of the sliding cavity.

[0012] Compared with the prior art, the utility model provides an arthroscopic anterior cruciate ligament stump measurement instrument, which has the following beneficial effects:

[0013] By providing a mirror tube, a sliding cavity, a telescopic air tube, a piston pad, a measuring tube and scale lines, the mirror tube is extended into the patient's body. Since the sliding cavity is opened inside the mirror tube, the shape characteristics of the mirror tube will not be changed, thereby ensuring that the area of ​​the patient's surgical wound is minimized and the original effect of minimally invasive surgery is maintained. When the ligament stump needs to be measured, the telescopic air tube is connected to the air pump, and air is supplied by the air pump to allow the gas to enter the sliding cavity, thereby squeezing the measuring tube installed at one end of the piston pad out of the sliding cavity. Since scale lines are provided on the outside of the measuring tube and the measuring tube is transparent, the value of the scale line can be clearly observed through the mirror tube, thereby obtaining the length of the ligament stump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the mirror tube of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model;

[0017] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0018] In the figure: 1. arthroscope connecting block; 2. endoscope connecting seat; 3. light source tube; 4. connecting tube; 5. telescopic air tube; 6. air release valve; 7. knob; 8. mirror tube; 9. reset spring rope; 10. sliding cavity; 11. piston pad; 12. measuring tube; 13. scale line. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1: A mirror tube 8 is installed on one side of the arthroscopic connecting block 1, a sliding cavity 10 is opened inside the mirror tube 8, a reset spring rope 9 is installed inside the sliding cavity 10, a piston pad 11 is installed inside the sliding cavity 10, one end of the reset spring rope 9 is connected to one side of the piston pad 11, a measuring tube 12 is installed on one side of the piston pad 11, scale lines 13 are provided on the outside of the measuring tube 12, a connecting tube 4 is installed on the outside of the mirror tube 8, a telescopic air tube 5 is installed on one end of the connecting tube 4, the measuring tube 12 is transparent, and there are four scale lines 13, which are respectively located around the measuring tube 12.

[0021] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when in use, by extending the scope tube 8 into the patient's body, since a sliding cavity 10 is provided inside the scope tube 8, the shape characteristics of the scope tube 8 will not be changed, thereby ensuring that the area of ​​the surgical wound on the patient is minimized and maintaining the effect of the original minimally invasive surgery. When the ligament stump needs to be measured, the telescopic air tube 5 is connected to the air pump, and the air is supplied by the air pump to allow the gas to enter the sliding cavity 10. When the gas enters the sliding cavity 10, the pressure inside the sliding cavity 10 will increase. Since a piston pad 11 is installed inside the sliding cavity 10, when the air pressure inside the sliding cavity 10 increases, the piston pad 11 will interact outward, thereby squeezing the measuring tube 12 installed at one end of the piston pad 11 into the sliding cavity 10. Since a scale line 13 is provided on the outside of the measuring tube 12, and the measuring tube 12 is transparent, the value of the scale line 13 can be clearly observed through the scope tube 8, thereby obtaining the length of the ligament stump.

[0022] Embodiment 2: A drain valve 6 is installed on the outside of the connecting tube 4, and a knob 7 is installed on one side of the drain valve 6, a light source tube 3 is installed on the bottom of the arthroscopic connecting block 1, and a endoscope connecting seat 2 is installed on one side of the arthroscopic connecting block 1, one end of the sliding cavity 10 passes through the interior of the mirror tube 8, and the thickness of the sliding cavity 10 is 2 mm, and the interior of the connecting tube 4 is connected to the interior of the sliding cavity 10.

[0023] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, since one side of the piston pad 11 is connected to one end of the reset spring rope 9, when the piston pad 11 moves inside the sliding cavity 10, the reset spring rope 9 will be pulled. When the measurement is completed, the air release valve 6 is opened by the knob 7 to release the gas inside the sliding cavity 10. When the gas inside the sliding cavity 10 is released, the gas pressure inside the sliding cavity 10 will decrease. At this time, the stretched reset spring rope 9 will pull the piston pad 11 back to the initial position inside the sliding cavity 10, thereby re-accommodating the measuring tube 12 into the sliding cavity 10. Since the thickness of the sliding cavity 10 is 2 mm, it will not affect the normal use of the mirror tube 8. The endoscope connecting seat 2 installed on one side of the arthroscope connecting block 1 can be connected to the observation equipment, and the light source tube 3 installed at the bottom of the arthroscope connecting block 1 can provide a light source for the mirror tube 8.

[0024] Working principle: When in use, connect the endoscope connection seat 2 installed on one side of the arthroscopic connection block 1 to the observation equipment, then turn on the light source tube 3, extend the endoscope tube 8 installed on one side of the arthroscopic connection block 1 into the patient's body, and then observe the patient's body. When it is necessary to measure the ligament stump, connect the telescopic air tube 5 to the air pump, and supply air through the air pump to allow the gas to enter the interior of the sliding cavity 10. When the gas enters the interior of the sliding cavity 10, the pressure inside the sliding cavity 10 will increase. Since a piston pad 11 is installed inside the sliding cavity 10, when the air pressure inside the sliding cavity 10 increases, the piston pad 11 will interact outward, thereby squeezing the measuring tube 12 installed at one end of the piston pad 11 out of the sliding cavity 1. 0, since the outer side of the measuring tube 12 is provided with a scale line 13, and the measuring tube 12 is transparent, the value of the scale line 13 can be clearly observed through the mirror tube 8, so as to obtain the length of the ligament stump. After the measurement is completed, the gas inside the sliding cavity 10 can be released by opening the air release valve 6 through the knob 7. When the gas inside the sliding cavity 10 is released, the gas pressure inside the sliding cavity 10 will decrease. At this time, the stretched reset spring rope 9 will pull the piston pad 11 back to the initial position inside the sliding cavity 10, so as to re-accommodate the measuring tube 12 into the sliding cavity 10. Since the thickness of the sliding cavity 10 is 2 mm, it will not affect the normal use of the mirror tube 8.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An arthroscopic anterior cruciate ligament stump measuring instrument, comprising an arthroscopic connecting block (1), characterized in that: A mirror tube (8) is installed on one side of the arthroscopic connecting block (1), a sliding cavity (10) is provided inside the mirror tube (8), a reset spring rope (9) is installed inside the sliding cavity (10), a piston pad (11) is installed inside the sliding cavity (10), one end of the reset spring rope (9) is connected to one side of the piston pad (11), a measuring tube (12) is installed on one side of the piston pad (11), a scale line (13) is provided on the outer side of the measuring tube (12), a connecting tube (4) is installed on the outer side of the mirror tube (8), and a telescopic air tube (5) is installed on one end of the connecting tube (4).

2. The arthroscopic anterior cruciate ligament stump measuring instrument according to claim 1, characterized in that: An air release valve (6) is installed on the outer side of the connecting pipe (4), and a knob (7) is installed on one side of the air release valve (6).

3. The arthroscopic anterior cruciate ligament stump measuring instrument according to claim 1, characterized in that: A light source tube (3) is installed at the bottom of the arthroscopic connection block (1), and a speculum connection seat (2) is installed at one side of the arthroscopic connection block (1).

4. The arthroscopic anterior cruciate ligament stump measuring instrument according to claim 1, characterized in that: One end of the sliding cavity (10) passes through the interior of the mirror tube (8), and the thickness of the mirror tube (8) is 2 millimeters.

5. The arthroscopic anterior cruciate ligament stump measuring instrument according to claim 1, characterized in that: The measuring tube (12) is transparent, and has four scale lines (13) which are respectively located around the measuring tube (12).

6. The arthroscopic anterior cruciate ligament stump measuring instrument according to claim 1, characterized in that: The interior of the connecting pipe (4) is communicated with the interior of the sliding cavity (10).

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