Lubricant supply mechanism, assembly equipment and lubricant supply method

Abstract

The present invention relates to a lubricant supply mechanism, an assembly device and a lubricant supply method. The lubricant supply mechanism is used to supply lubricant to the compression sleeve, and includes: a limit assembly, which is provided with a matching through hole for the matching part of the catheter of the compression sleeve to extend into; and, an injection assembly, which has an injection channel connected to the lubricant storage chamber, and the liquid outlet port of the injection channel is connected to the matching through hole; a liquid retention part is provided in the limit assembly, and the liquid retention part divides the matching through hole into at least a first hole segment and a second hole segment arranged along the axial direction, and the flow cross-sections of the first hole segment and the second hole segment are different. The beneficial effects of the present invention are: under the guidance of the injection channel, alcohol can be evenly and accurately supplied to the required parts without adhering to the parts of the device that do not need lubrication; the setting of the liquid retention part can prolong the contact time between the alcohol and the compression sleeve, thereby improving the lubrication effect on the compression sleeve and the catheter; the matching through hole can reduce the volatilization of alcohol, thereby reducing the waste of alcohol.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device production, and in particular to a lubricant supply mechanism, an assembly device and a lubricant supply method. Background Art

[0002] At present, most medical devices are made of plastic or rubber, which brings inconvenience to the assembly of medical devices, especially those with medical catheters. Taking the installation of a compression sleeve on a medical catheter as an example, since the catheter itself has a certain flexibility, when the tooling fixture applies force to it, the catheter is easily bent or wrinkled under the friction resistance of the compression sleeve. The greater the force applied, the more difficult it is to assemble the catheter and the compression sleeve. However, if the force applied is too small, it will be difficult for the catheter to overcome the friction of the compression sleeve, and it will be inconvenient to complete the assembly.

[0003] In this regard, a solution currently proposed is to spray lubricant on the part where the compression sleeve contacts the inner wall of the catheter (referred to as the catheter fitting part) to reduce the static friction between the catheter and the compression sleeve by lubricating with the lubricant. In this way, even if the fixture applies a small force to at least one of the catheter or the compression sleeve, the assembly process of the catheter sleeve and the compression sleeve can be completed relatively easily. From the perspective of product assembly alone, this solution is feasible.

[0004] However, in actual application, many problems still need to be solved in order to implement the above countermeasures: First, due to the special use of medical devices and strict legal regulations on production and preparation, medical devices must meet corresponding sanitary conditions and have sufficient safety, which means that the use of lubricants is strictly restricted, and most lubricants will have a negative impact on human health and are not suitable for use in medical devices. At present, the only lubricant that meets low cost, safety and meets sanitary standards is alcohol. However, alcohol itself is volatile, and the lubrication effect is difficult to guarantee. In addition, excessive use will also create safety hazards, such as causing fires. Summary of the invention

[0005] In view of this, it is necessary to provide a lubricant supply mechanism for supplying lubricant to the press sleeve, characterized in that the lubricant supply mechanism includes:

[0006] The limiting component is provided with a matching through hole into which the matching part of the conduit of the pressing sleeve can extend; and,

[0007] A liquid injection assembly having a liquid injection channel connected to the lubricant storage chamber, wherein a liquid outlet port of the liquid injection channel is connected to the matching through hole;

[0008] A liquid retention portion is provided in the limiting component, and the liquid retention portion divides the matching through hole into at least a first hole segment and a second hole segment arranged along the axial direction, and the flow cross sections of the first hole segment and the second hole segment are different.

[0009] The lubricant supply mechanism provided by the present invention is suitable for supplying alcohol to the catheter and the press sleeve to achieve lubrication before the two are assembled. Alcohol directly enters the matching through hole from the lubricant storage chamber through the injection channel and can just flow to the catheter matching part located in the matching through hole, so that the catheter matching part of the press sleeve is lubricated by alcohol.

[0010] The lubricant supply mechanism provided by the present invention has the following beneficial effects:

[0011] 1) The lubricant enters the mating through hole under the guidance of the injection channel, so the lubricant is supplied more evenly and accurately. The lubricant is only supplied to the parts that need lubrication (i.e., the catheter mating part of the press sleeve), and will not adhere to the components that do not need lubrication. Therefore, the amount of lubricant used is less, which is conducive to alleviating the rapid consumption of the lubricant;

[0012] 2) The setting of the liquid retention part slows down the rate at which the lubricant overflows from the mating through hole, so that the lubricant accumulates in the mating through hole for as long as possible, prolonging the time for the lubricant to contact the mating part of the catheter, so that the mating part of the catheter can be fully lubricated, achieving a more significant lubrication effect while achieving less usage;

[0013] 3) The lubricant is confined in the matching through hole during lubrication. The space in the matching through hole is not only narrow but also has a certain depth. In practical applications, this can prevent the acceleration of lubricant volatilization under the interference of external air flow. The reduction of lubricant volatilization is also conducive to reducing lubricant waste and reducing the cost of medical device production and preparation;

[0014] 4) The reduction in lubricant volatilization also reduces the risk of fire caused by the lubricant.

[0015] In one embodiment, a liquid injection hole is also provided in the limit assembly, and the liquid inlet opening of the liquid injection hole is provided on the outer surface of the limit assembly and connected to the liquid outlet port of the liquid injection channel; the liquid outlet opening of the liquid injection hole is provided on the inner wall surface of the matching through hole; or, the liquid outlet opening of the liquid injection hole is provided in the liquid stagnant portion and connected to the matching through hole.

[0016] With such arrangement, the injection channel directly passes through the injection hole into the matching through hole, and the lubricant discharged from the lubricant storage chamber accurately enters the matching through hole and directly lubricates the catheter matching part of the press sleeve.

[0017] In one embodiment, the first hole segment and the second hole segment are both cylindrical holes and are coaxially arranged, the inner diameter of the first hole segment is smaller than the inner diameter of the second hole segment, and the first hole segment and the second hole segment are used to sleeve the catheter fitting portion and the catheter respectively.

[0018] In this way, the coaxially arranged first hole section and second hole section can speed up the assembly rate of the compression sleeve and the catheter. Once lubrication is completed, they can be quickly plugged in and matched without adjusting the relative position between the compression sleeve and the catheter, thereby reducing unnecessary waste of time. It is also possible to first coaxially plug the catheter matching part and the catheter in advance, and then inject lubricant into the matching through hole, and use the siphon effect of the tiny gap on the liquid to make the lubricant be sucked into the gap between the catheter and the catheter matching part. In addition, the probability of lubricant overflow is reduced, and the rate at which the lubricant diffuses from the stagnant liquid part to the compression sleeve and the catheter is accelerated.

[0019] In one embodiment, the liquid retention portion is disposed on the inner wall surface of the matching through hole and is arranged around the axis of the matching through hole.

[0020] With such arrangement, after the lubricant flows to the stagnant liquid portion, it can be distributed along the stagnant liquid portion around the entire circumference of the axis of the mating through hole, so that the entire circumference of the catheter mating portion and / or the entire circumference of the catheter inner wall can be lubricated by the lubricant, the lubricant covers a larger area, and the lubrication effect is further improved.

[0021] In one embodiment, the shape of the liquid-retaining portion is configured to be conformable to the side surface of a frustum, and the liquid-retaining portion connects the inner wall surfaces of the first hole segment and the second hole segment.

[0022] With such a configuration, there is an inclined angle between the normal vector of the surface of the stagnant liquid portion and the axial direction of the matching through hole, so that the stagnant liquid portion can carry the lubricant in a short time and prevent the lubricant from overflowing quickly along the inner wall of the matching through hole, and the resistance to the lubricant diffusing on the stagnant liquid portion is smaller.

[0023] In one embodiment, the limiting assembly includes a first jaw and a second jaw that can move toward or away from each other, and the first jaw and the second jaw are respectively provided with a first through groove and a second through groove; when the first jaw approaches and contacts the second jaw, the first through groove and the second through groove are combined to form a matching through hole; the first jaw and the second jaw clamp the conduit matching part of the pressing sleeve so that the pressing sleeve is passed through the matching through hole.

[0024] With such arrangement, the first clamping jaw and the second clamping jaw place the catheter matching portion of the press sleeve in the matching through hole by clamping, which can be suitable for the use of automated mass lubrication of catheters and press sleeves.

[0025] In one embodiment, the liquid injection assembly includes a liquid conduit connected to the lubricant storage chamber, the liquid outlet port is located at an end opening of the liquid conduit relatively far from the lubricant storage chamber, and the liquid outlet port points to the matching through hole opening.

[0026] With such arrangement, the structure of the lubricant supply mechanism is further simplified, which is beneficial to reducing production costs.

[0027] The present invention also provides an assembly device for assembling a catheter and a press sleeve, characterized in that the assembly device includes the above-mentioned lubricant supply mechanism, a lubricant storage chamber and a tooling fixture for positioning the catheter and the press sleeve, and the lubricant storage chamber is connected to the injection channel so that the lubricant can enter the mating through hole through the injection channel.

[0028] The present invention also provides a lubricant supply method based on the lubricant supply mechanism, characterized in that the lubricant supply mechanism is the above-mentioned lubricant supply mechanism, and the lubricant supply method comprises the following steps:

[0029] S10, inserting the catheter matching part of the compression sleeve into the matching through hole;

[0030] S20, opening the liquid injection assembly to connect the liquid injection channel and the matching through hole.

[0031] The lubricant supply method provided by the present invention has the following beneficial effects:

[0032] 1) The lubricant enters the matching through hole under the guidance of the injection channel, making the lubricant supply more uniform and accurate. The lubricant only needs to be supplied to the parts that need lubrication, and will not adhere to the devices or parts that do not need lubrication, thus reducing the unnecessary consumption of lubricant;

[0033] 2) The liquid retention portion prolongs the time that the lubricant stays in the matching through hole, slows down the rate at which the lubricant overflows from the matching through hole, and improves the lubrication effect while reducing the amount of lubricant used;

[0034] 3) The lubricant is confined in the matching through hole during lubrication. The space in the matching through hole is narrow and has a certain depth. In practical applications, it can prevent the interference of external air flow and accelerate the volatilization of the lubricant, and it is also beneficial to reduce unnecessary consumption of lubricant.

[0035] In one embodiment, the step of placing the catheter mating portion of the press sleeve in the mating through hole includes: the press sleeve is inserted into the mating through hole to a depth such that a projection of the catheter mating portion in a plane where the press sleeve axis is located coincides with a projection of the stagnant liquid portion in the plane where the press sleeve axis is located.

[0036] With such arrangement, the lubricant on the stagnant liquid portion can be diffused to the outer peripheral surface of the catheter fitting portion faster and more time-saving, thereby improving the lubrication efficiency.

[0037] Further, after step S20, the lubricant supply method further comprises the following steps:

[0038] S30, driving the catheter to slide relative to the compression sleeve and increasing the depth of the catheter sleeve to securely fit the catheter with the catheter fitting portion.

[0039] Furthermore, the lubricant supply method further comprises the following steps:

[0040] S40, driving the catheter to move a preset distance in a direction away from the compression sleeve, so that part of the catheter matching portion is exposed outside the catheter, and the catheter remains in a state of being sleeved on the catheter matching portion;

[0041] Wherein, step S40 is performed after step S20 is completed and before step S30 is performed; or, step S40 is performed before step S20 is performed.

[0042] With such an arrangement, the catheter can be moved a preset distance in advance, the length of the catheter sleeve catheter fitting part can be reduced, and the length of the catheter fitting part exposed from the catheter can be increased, thereby increasing the area of ​​the catheter fitting part that is infiltrated by the lubricant when the catheter and the pressing sleeve are not separated from each other. After the lubricant has completely infiltrated the catheter fitting part, the catheter and the pressing sleeve can be assembled into one. The adhesion property of the lubricant can also be utilized. When the lubricant adheres to the catheter fitting part, the catheter moves in a direction away from the pressing sleeve, and at the same time, a part of the lubricant will be driven to diffuse axially along the side wall of the catheter fitting part, thereby increasing the area of ​​the lubricant infiltrating the catheter fitting part. The axial diffusion of the lubricant is carried out along the entire circumference of the side wall of the catheter fitting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a partial structural schematic diagram of a lubricating device including the lubricant supply mechanism provided by the present invention;

[0044] Figure 2 for Figure 2 The structural schematic diagram of the lubrication device shown in the second viewing angle;

[0045] Figure 3 for Figure 2 The lubrication device shown is a partial enlarged schematic diagram at position X;

[0046] Figure 4 A partial structural schematic diagram of the lubricant supply mechanism provided by the present invention;

[0047] Figure 5 for Figure 4 The shown schematic cross-sectional view of the lubricant supply mechanism at GG.

[0048] Description of reference numerals:

[0049] 100. Lubricant supply mechanism; 10. Limiting assembly;

[0050] 11, first clamping jaw; 12, second clamping jaw; 111, first end; 112, second end;

[0051] 101, matching through hole; 1011, first hole section; 1012, second hole section; 102, liquid stagnant portion; 103, liquid injection hole;

[0052] 200, lubrication device; 210, lubricant storage chamber;

[0053] 011. Press sleeve; 0111. Catheter fitting part; 012. Catheter. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0056] The present invention provides a lubricant supply mechanism 100, which is used to supply liquid lubricant to a compression sleeve 011 plugged and assembled with a medical catheter 012, so as to lubricate the compression sleeve 011 and the inner wall of the catheter 012. The purpose of lubricating the catheter 012 and the compression sleeve 011 is to reduce the resistance when the two are plugged and assembled, and to alleviate the blocking feeling during the plugging, so that the compression sleeve 011 can be inserted into the catheter 012 with a small external force.

[0057] The production and preparation process of medical devices needs to meet relevant health and safety standards. Alcohol is preferably used as the lubricant for lubricating the medical catheter 012 and the compression sleeve 011, which is also based on cost control considerations.

[0058] It should be noted that the lubricant supply mechanism 100 provided by the present invention is not limited to supplying alcohol to the medical catheter 012 and the compression sleeve 011. With the advancement of technology, if a liquid lubricant that can replace alcohol appears in the future and the lubricant has similar physical properties to alcohol, the lubricant supply mechanism 100 of the present invention can also be used.

[0059] However, for the sake of ease of description, alcohol is used as the lubricant to explain the structure and operation of the lubricant supply mechanism 100.

[0060] See also Figures 1 to 5 , Figure 1It is a partial structural schematic diagram of a lubricating device 200 including the lubricant supply mechanism 100 provided by the present invention; Figure 2 for Figure 2 The structure diagram of the lubrication device 200 shown is in the second viewing angle; Figure 3 for Figure 2 The lubrication device 200 is shown as a partial enlarged schematic diagram at position X; Figure 4 A partial structural schematic diagram of a lubricant supply mechanism 100 provided by the present invention; Figure 5 for Figure 4 The lubricant supply mechanism 100 is shown as a schematic cross-sectional view at GG.

[0061] The lubricant supply mechanism 100 provided by the present invention includes a limit assembly 10 and a liquid injection assembly. The limit assembly 10 is used to limit the freedom of movement of the press sleeve 011 or the press sleeve 011 and the catheter 012 during the lubricant supply process to prevent lubrication failure caused by the dislocation of the press sleeve 011 or the catheter 012; the liquid injection assembly is used to guide alcohol to the part of the press sleeve 011 that needs to be lubricated, that is, the catheter mating part 0111 on the press sleeve 011 for mating with the inner wall of the catheter 012.

[0062] The limiting assembly 10 is provided with a matching through hole 101, the inner diameter of which is larger than the outer diameter of the catheter matching portion 0111, thereby allowing the catheter matching portion 0111 of the pressing sleeve 011 to extend into the matching through hole 101. When the catheter matching portion 0111 is extended into the matching through hole 101, the matching through hole 101 can limit the freedom of radial translation of the pressing sleeve 011 and the rotation freedom of the pressing sleeve 011 around the center outside its own axis.

[0063] A liquid stagnation portion 102 is also provided in the limiting component 10, and the liquid stagnation portion 102 at least divides the matching through hole 101 into a first hole segment 1011 and a second hole segment 1012 located on both sides of the liquid stagnation portion 102 and connected to each other. The flow cross-sections of the first hole segment 1011 and the second hole segment 1012 are different, so that the flow velocity of the fluid when flowing through the liquid stagnation portion 102 changes regardless of whether it flows from the first hole segment 1011 to the second hole segment 1012 or from the second hole segment 1012 to the first hole segment 1011.

[0064] The flow cross sections of the first hole segment 1011 and the second hole segment 1012 are different, which may be different in shape or in area, as long as the flow velocity of the fluid passing through the liquid stagnant portion 102 can be changed.

[0065] In particular, the limiting assembly 10 has a first end 111 and a second end 112 which are arranged away from each other, the opening of the first hole section 1011 is located at the first end 111, and the opening of the second hole section 1012 is located at the second end 112. When the lubricant supply mechanism is actually used, the opening edge of the first hole section 1011 corresponds to the ring-arranged pressing sleeve 011, and the opening edge of the second hole section 1012 corresponds to the ring-arranged conduit 012. When the lubricant flows from the second hole section 1012 to the first hole section 1011, the flow rate decreases after passing through the liquid stagnation portion 102.

[0066] In this embodiment, the first hole segment 1011 and the second hole segment 1012 are preferably straight hole segments.

[0067] The injection assembly has an injection channel connected to the lubricant storage chamber 210, and the liquid outlet port of the injection channel is connected to the matching through hole 101. When the injection assembly is opened, the alcohol in the lubricant storage chamber 210 can be injected into the matching through hole 101 through the injection channel. At this time, if the catheter matching part 0111 is placed in the matching through hole 101, the alcohol can directly contact and adhere to the outer peripheral surface of the catheter matching part 0111.

[0068] It should be noted here that the liquid outlet port of the injection channel is connected to the matching through hole 101, which includes both direct connection between the two, that is, the alcohol can directly enter the matching through hole 101 after being discharged from the liquid outlet port, and also includes the situation where the two are indirectly connected through other media channels.

[0069] As a preferred embodiment, a liquid injection hole 103 is further provided in the limit assembly 10, the liquid inlet opening of the liquid injection hole 103 is located on the outer surface of the limit assembly 10 and is connected to the liquid outlet port of the above-mentioned liquid injection channel, and the liquid outlet opening of the liquid injection hole 103 is provided on the inner wall surface of the matching through hole 101, or the liquid outlet opening of the liquid injection hole 103 is provided on the liquid stagnant portion 102 and is connected to the matching through hole 101. Thus, the liquid injection channel is indirectly connected to the matching through hole 101 through the liquid injection hole 103.

[0070] The lubricant supply mechanism 100 provided by the present invention is suitable for supplying alcohol to the catheter 012 and the pressing sleeve 011 to achieve lubrication of the two before assembly. The alcohol directly and accurately enters the matching through hole 101 through the injection channel from the lubricant storage chamber 210, and can just flow to the catheter matching part 0111 located in the matching through hole 101, so that the catheter matching part 0111 is lubricated by alcohol.

[0071] It can be understood that in other embodiments, the limiting component 10 may not be provided with the injection hole 103. When the injection component is provided with a liquid catheter, the liquid outlet port located at the end of the liquid catheter relatively far away from the lubricant storage chamber 210 directly points to the opening of the matching through hole 101, for example, directly points to the opening of the second hole segment 1012 on the second end 112, so that the orthographic projection of the liquid outlet port in the radial plane of the matching through hole 101 and the orthographic projection of the opening of the second hole segment 1012 in the radial plane at least partially overlap. At this time, alcohol drips into the matching through hole 101 under the action of gravity or the internal pressure of the injection component, or flows into the matching through hole 101 along the inner wall surface of the second hole segment 1012, and the purpose of supplying alcohol to the catheter matching part 0111 can also be achieved. Of course, the liquid outlet port of the liquid catheter can also point to the opening of the first hole segment 1011.

[0072] In one embodiment, the first hole segment 1011 and the second hole segment 1012 are both cylindrical holes and are coaxially arranged, wherein the inner diameter of the first hole segment 1011 is smaller than the inner diameter of the second hole segment 1012, the first hole segment 1011 is used to sleeve the catheter matching portion 0111, and the second hole segment 1012 is used to sleeve a portion of the catheter 012. When the catheter matching portion 0111 is inserted into the matching through hole 101, an annular gap is formed between the outer peripheral wall of the catheter matching portion 0111 and the inner wall of the second hole segment 1012, so that the catheter 012 can be inserted into the annular gap.

[0073] After lubrication of the catheter mating portion 0111 is completed, there is no need to adjust the relative position between the pressing sleeve 011 and the catheter 012 again, and the two can be immediately plugged and fixed together. Therefore, the coaxially arranged first hole segment 1011 and second hole segment 1012 can speed up the assembly rate of the pressing sleeve 011 and the catheter 012.

[0074] The coaxial arrangement of the first hole segment 1011 and the second hole segment 1012 also creates the possibility for the following lubrication method: first, pre-plug the catheter mating part 0111 and the catheter 012, then open the liquid injection component, and inject alcohol into the mating through hole 101. By utilizing the principle of siphoning liquid through tiny gaps between objects, the alcohol is siphoned into the gap between the inner wall of the catheter 012 and the outer wall of the catheter mating part 0111. This lubrication method can reduce the probability of alcohol overflowing from the mating through hole 101 and speed up the diffusion rate of alcohol from the stagnant liquid part 102 to the pressure sleeve 011 and the catheter 012.

[0075] Of course, in some other embodiments, the first hole segment 1011 and the second hole segment 1012 do not have to be coaxially arranged cylindrical holes, but can adopt hole structures of other shapes, and there may also be an offset between the center lines of the two holes.

[0076] In addition, in other embodiments, the conduit 012 may not necessarily extend into the second hole segment 1012. For example, the mating through hole 101 may include a fixed-section hole segment and a variable-section hole segment that are interconnected, the cross-sectional shape of the inner wall of the fixed-section hole segment is the same everywhere, and the size of the inner wall of the variable-section hole segment changes along the length direction of the hole segment. The fixed-section hole segment and the variable-section hole segment correspond to the first hole segment 1011 or the second hole segment 1012, and the variable-section hole segment may be a trumpet hole opened at the first end 111 or the second end 112, and the inner wall is a frustum-shaped side surface. In this case, the liquid stagnation portion 102 is a closed edge located at the junction of the fixed-section hole segment and the variable-section hole segment.

[0077] Furthermore, the liquid stagnant portion 102 is disposed on the inner wall surface of the mating through hole 101, and the liquid stagnant portion 102 is a revolving surface disposed around the axis of the mating through hole 101. In other words, the liquid stagnant portion 102 is a part of the inner wall surface of the mating through hole 101. After the alcohol flows to the liquid stagnant portion 102, it can diffuse along the circumference of the inner wall surface of the mating through hole 101, thereby forming an annular liquid film on the liquid stagnant portion 102, so as to better ensure that each part of the circumferential side wall of the catheter mating portion 0111 can be infiltrated by alcohol.

[0078] Optionally, in this embodiment, the shape of the liquid retention portion 102 is a tapered hole inner wall surface arranged around the axis of the matching through hole 101, which can be matched with the side of the frustum, and the two ends of the liquid retention portion 102 are respectively connected to the inner wall surface of the first hole segment 1011 and the inner wall surface of the second hole segment 1012. The injection hole 103 is a straight hole segment and extends along the radial direction of the matching through hole 101, and the liquid outlet opening of the injection hole 103 is opened on the liquid retention portion 102.

[0079] With such a configuration, there is an inclined angle between the normal vector of the surface of the liquid-retaining portion 102 and the axial direction of the matching through hole 101 , so that the liquid-retaining portion 102 can carry alcohol in a short period of time, delay the rapid overflow of alcohol from the matching through hole 101 , and reduce the resistance to the diffusion of alcohol on the liquid-retaining portion 102 .

[0080] In particular, when the matching through hole 101 is vertically arranged in actual use, the first hole section 1011 with a smaller inner diameter is located on the side of the second hole section 1012 close to the ground, and the inner diameter of the liquid retention part 102 decreases in the vertical downward direction, the effect of preventing alcohol overflow is more significant.

[0081] It is understood that the above embodiment is only a preferred solution in this embodiment and is not a necessary setting. In some other embodiments, the liquid stagnation portion 102 may not be arranged on the inner wall of the matching through hole 101, or the liquid stagnation portion 102 is not a part of the inner wall of the matching through hole 101.

[0082] For example, when the matching through hole 101 is a stepped hole with different inner diameters, the liquid stagnant portion 102 is a step surface where the large-diameter hole segment transitions to the small-diameter hole segment.

[0083] In addition, the generatrix of the liquid stagnant portion 102 does not necessarily have to be set as a straight line. The liquid stagnant portion 102 can be a curved surface formed by rotating a curved generatrix around the axis of the mating through hole 101. Other optional methods are not listed in detail here.

[0084] In one embodiment, the limiting assembly 10 includes a first clamping jaw 11 and a second clamping jaw 12 that can move toward or away from each other, and the first clamping jaw 11 and the second clamping jaw 12 are respectively provided with a first through slot and a second through slot. When the first clamping jaw 11 approaches and contacts the second clamping jaw 12, the first through slot and the second through slot are combined to form a matching through hole 101. The first clamping jaw 11 and the second clamping jaw 12 clamp the catheter matching portion 0111 so that the pressing sleeve 011 is inserted into the matching through hole 101.

[0085] In actual use, the catheter 012 can be pre-installed on the catheter matching part 0111, and after the pre-assembly of the two, they are clamped together by the first clamp 11 and the second clamp 12, and then the injection component is opened to inject alcohol into the matching through hole 101; or the pressure sleeve 011 can be clamped by the first clamp 11 and the second clamp 12, and then the injection component is opened to inject alcohol into the matching through hole 101, and then the catheter 012 is installed on the catheter matching part 0111.

[0086] It is not necessary to configure the limiting assembly 10 as two relatively movable jaws to achieve the purpose of the present invention. In some other embodiments, the limiting assembly 10 may also be other structures and is not limited to placing the catheter mating portion 0111 in the mating through hole 101 in a clamping manner.

[0087] In one embodiment, the discharge port of the lubricant storage chamber 210 is higher than the outlet port of the injection channel in the vertical direction. According to the communicating vessel principle, when the injection assembly is opened, the alcohol in the lubricant storage chamber 210 can flow into the matching through hole 101 spontaneously through the injection channel without the need for additional liquid guiding or pumping devices.

[0088] In some embodiments, the mating through hole 101 can also be divided into three or more hole segments. When the number of hole segments is three, the inner diameter of the hole segment located in the middle can be larger than the inner diameters of the hole segments on both sides thereof, the inner wall of the middle hole segment is used to form the liquid stagnant portion 102, and the remaining two hole segments respectively form the first hole segment 1011 and the second hole segment 1012. At this time, the inner diameter of the second hole segment 1012 is preferably set to be smaller than the outer diameter of the conduit 012, and the inner wall of the second hole segment 1012 can clamp the conduit 012, forcing the conduit 012 to produce a slight deformation, which is conducive to siphoning alcohol between the conduit 012 and the conduit mating portion 0111.

[0089] It should be noted that the present invention does not specifically limit the inner wall shapes of the first hole segment 1011 and the second hole segment 1012. For example, the cross section of the first hole segment 1011 and / or the cross section of the second hole segment 1012 may also be polygonal, so that the compression sleeve 011 or the conduit 012 with the same polygonal cross section shape can be adapted. In this embodiment, the cross section of the first hole segment 1011 is circular, which is designed to adapt to the compression sleeve 011 with the same circular cross section shape.

[0090] The lubricant supply mechanism 100 provided by the present invention has the following beneficial effects:

[0091] 1) The lubricant enters the mating through hole 101 under the guidance of the injection channel, so the lubricant is supplied more evenly and more accurately. The lubricant is only supplied to the parts that need lubrication and will not adhere to the components that do not need lubrication. Therefore, the amount of lubricant used is less, which is conducive to alleviating the rapid consumption of the lubricant.

[0092] 2) The setting of the liquid retention portion 102 slows down the rate at which the lubricant overflows from the mating through hole 101, so that the lubricant is accumulated in the mating through hole 101 for as long as possible, and prolongs the time for the lubricant to contact the catheter mating portion 0111 of the press sleeve 011, so that the catheter mating portion 0111 can be fully lubricated, achieving a more significant lubrication effect while achieving a smaller amount of lubricant;

[0093] 3) The lubricant is confined in the mating through hole 101 during lubrication. The space in the mating through hole 101 is not only narrow but also has a certain depth. In practical applications, this can prevent the acceleration of lubricant volatilization due to interference from external air flow. The reduction in the volatilization amount of the lubricant is also conducive to reducing the waste of lubricant and reducing the cost of medical device production.

[0094] The present invention further provides a lubricating device 200, comprising the lubricant supply mechanism 100 provided by the present invention and a lubricant storage chamber 210, wherein the lubricant storage chamber 210 is connected to the injection channel so that the lubricant can enter the matching through hole 101 through the injection channel. The lubricating device 200 provided by the present invention is particularly suitable for use in situations where alcohol is used to lubricate the conduit 012 and the compression sleeve 011.

[0095] The present invention also provides an assembly device for assembling a medical catheter 012 and a compression sleeve 011, comprising the lubricating device 200 provided by the present invention and a fixture for clamping the catheter 012 and the compression sleeve 011. The lubricating device 200 is used to inject lubricant into the catheter mating portion 0111 of the compression sleeve 011 before the fixture inserts and mates the compression sleeve 011 and the catheter 012.

[0096] The present invention also provides a lubricant supply method based on the lubricant supply mechanism 100, the method comprising the following steps:

[0097] S10, inserting the catheter matching portion 0111 of the pressing sleeve 011 into the matching through hole 101;

[0098] S20, opening the liquid injection assembly to connect the liquid injection channel and the matching through hole 101.

[0099] In one embodiment, step S10, i.e. placing the catheter matching portion 0111 of the pressing sleeve 011 into the matching through hole 101, further includes:

[0100] The depth of the pressing sleeve 011 inserted into the matching through hole 101 is such that the projection of the catheter matching portion 0111 in the plane where the axis of the pressing sleeve 011 is located overlaps with the projection of the liquid stagnant portion 102 in the same plane.

[0101] The purpose of the above limitation on the relative positional relationship between the catheter mating portion 0111 and the liquid stagnant portion 102 is that, under the action of the liquid stagnant portion 102, at least part of the alcohol can stagnate in a height range within the axial dimension range of the catheter mating portion 0111, so that the lubricant on the liquid stagnant portion 102 can diffuse to the catheter mating portion 0111 faster and more directly, thereby accelerating the lubrication rate.

[0102] Further, after step S20 is completed, the lubricant supply method further includes the following steps:

[0103] S30, driving the catheter 012 to slide relative to the pressing sleeve 011 and increasing the depth of the catheter 012 sleeved on the pressing sleeve 011, so that the catheter 012 is fixedly matched with the catheter matching portion 0111.

[0104] With such arrangement, the catheter 012 and the pressing sleeve 011 can be assembled into one piece after lubrication is completed.

[0105] Furthermore, the lubricant supply method further comprises the following steps:

[0106] S40, driving the catheter 012 to move a preset distance in a direction away from the pressing sleeve 011, so that part of the catheter matching portion 0111 is exposed outside the catheter 012, and the catheter 012 remains in a state of being sleeved on the catheter matching portion 0111.

[0107] Specifically, step S40 may be performed after step S20 is completed and before step S30 is performed, or may be performed before step S20 is performed.

[0108] Therefore, the present invention provides two ideas for making the lubricant infiltrate the catheter matching part 0111. The first idea follows the sequence of steps: S10-S40-S20-S30, that is, after the catheter matching part 0111 is inserted into the matching through hole 101, the catheter 012 can be moved by a preset distance (corresponding to the preset distance) to reduce the length of the catheter 012 sleeved with the catheter matching part 0111, and increase the length of the catheter matching part 0111 exposed from the catheter 012, thereby increasing the area of ​​the catheter matching part 0111 that is infiltrated by the lubricant when the catheter 012 and the pressing sleeve 011 are not separated from each other. After the lubricant has infiltrated the catheter matching part 0111, the catheter 012 and the pressing sleeve 011 are assembled into one.

[0109] The second idea follows the following step sequence: S10-S20-S40-S30. This idea utilizes the adhesion property of the lubricant. After the injection assembly is opened, the lubricant first enters the mating through hole 101 and slightly adheres to the catheter mating part 0111, and then drives the catheter 012 to slide a distance (corresponding to the preset distance) in the direction away from the pressing sleeve 011. While the catheter 012 slides, the lubricant is driven by its end to diffuse axially along the side wall of the catheter mating part 0111 along the pressing sleeve 011. The lubricant is sucked into the gap between the inner wall of the catheter 012 and the side wall of the catheter mating part 0111, thereby increasing the area of ​​the lubricant wetting the catheter mating part 0111. The axial diffusion of the lubricant is carried out around the entire circumference of the side wall of the catheter mating part 011.

[0110] In one embodiment, the inner diameter of the second hole section 1012 is equal to or smaller than the outer diameter of the catheter 012. With such a configuration, the catheter 012 can be squeezed by the inner wall of the second hole section 1012, causing a slight deformation, and then the first clamping jaw 11 and the second clamping jaw 12 relax the clamping force on the catheter 012 and the compression sleeve 011, at which time the deformation of the catheter 012 is eliminated, and the siphoning rate of the alcohol is accelerated during the process of restoring its shape, so that the catheter mating part 0111 located deeper in the catheter 012 can be partially lubricated.

[0111] The method provided by the present invention is not limited to supplying alcohol to the catheter 012 and the compression sleeve 011. Other types of lubricants can also be supplied using the above method as long as they meet the hygiene standards and safety requirements for the production and preparation of medical devices.

[0112] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0113] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A lubricant supply mechanism for supplying lubricant to a press sleeve (011), characterized in that: The lubricant supply mechanism comprises: The limiting assembly (10) is provided with a matching through hole (101) into which the catheter matching portion (0111) of the pressing sleeve (011) can extend; and A liquid injection assembly having a liquid injection channel connected to the lubricant storage chamber (210), wherein a liquid outlet port of the liquid injection channel is connected to the matching through hole (101); The limit assembly (10) is provided with a liquid stagnant portion (102), the liquid stagnant portion (102) divides the matching through hole (101) into at least a first hole segment (1011) and a second hole segment (1012), the first hole segment (1011) and the second hole segment (1012) having different flow cross sections, so that the flow velocity of the liquid changes when flowing through the liquid stagnant portion (102); A liquid injection hole (103) is also provided in the limiting component (10), and a liquid inlet opening of the liquid injection hole (103) is provided on the outer surface of the limiting component (10) and is connected to a liquid outlet port of the liquid injection channel; The liquid outlet opening of the liquid injection hole (103) is provided on the inner wall surface of the matching through hole (101); or, the liquid outlet opening of the liquid injection hole (103) is provided on the liquid stagnant portion (102) and communicates with the matching through hole (101); The limiting assembly (10) comprises a first clamping jaw (11) and a second clamping jaw (12) which can move towards or away from each other, and the first clamping jaw (11) and the second clamping jaw (12) are respectively provided with a first through slot and a second through slot; When the first clamping jaw (11) approaches and contacts the second clamping jaw (12), the first through slot and the second through slot are combined to form the matching through hole (101); the first clamping jaw (11) and the second clamping jaw (12) clamp the catheter matching portion (0111) of the pressing sleeve (011) so that the pressing sleeve (011) is inserted into the matching through hole (101).

2. The lubricant supply mechanism according to claim 1, characterized in that: The first hole segment (1011) and the second hole segment (1012) are both cylindrical holes and are coaxially arranged. The inner diameter of the first hole segment (1011) is smaller than the inner diameter of the second hole segment (1012). The first hole segment (1011) and the second hole segment (1012) are used to respectively sleeve the catheter matching portion (0111) and the catheter (012).

3. The lubricant supply mechanism according to claim 2, characterized in that: The liquid retention portion (102) is arranged on the inner wall surface of the matching through hole (101), and is arranged around the axis of the matching through hole (101).

4. The lubricant supply mechanism according to claim 3, characterized in that: The shape of the liquid-retaining portion (102) is configured to be conformable to the side surface of the frustum, and the liquid-retaining portion (102) connects the inner wall surfaces of the first hole segment (1011) and the second hole segment (1012).

5. An assembly device for assembling a compression sleeve and a catheter, characterized in that: The assembly equipment comprises a lubricant supply mechanism as described in any one of claims 1 to 4, a lubricant storage chamber (210) and a fixture for positioning the catheter (012) and the pressing sleeve (011); the lubricant storage chamber (210) is connected to the injection channel so that the lubricant can enter the mating through hole (101) through the injection channel.

6. A lubricant supply method based on a lubricant supply mechanism, characterized in that: The lubricant supply mechanism is the lubricant supply mechanism according to any one of claims 1 to 4, and the lubricant supply method comprises the following steps: S10, inserting the catheter matching portion (0111) of the pressing sleeve (011) into the matching through hole (101); S20, opening the liquid injection assembly to connect the liquid injection channel and the matching through hole (101).

7. The lubricant supply method according to claim 6, characterized in that: Step S10 includes: The depth of the pressing sleeve (011) inserted into the matching through hole (101) is such that the projection of the catheter matching portion (0111) in the plane where the axis of the pressing sleeve (011) is located coincides with the projection of the liquid stagnant portion (102) in the plane where the axis of the pressing sleeve (011) is located.

8. The lubricant supply method according to claim 6, characterized in that: After step S20, the lubricant supply method further comprises the following steps: S30, driving the catheter (012) to slide relative to the pressing sleeve (011) and increasing the depth of the catheter (012) sleeved on the pressing sleeve (011), so that the catheter (012) and the catheter matching portion (0111) are fixedly matched.

9. The lubricant supply method according to claim 8, characterized in that: The lubricant supply method further comprises the following steps: S40, driving the catheter (012) to move a preset distance in a direction away from the pressing sleeve (011), so that part of the catheter matching portion (0111) is exposed outside the catheter (012), and the catheter (012) remains in a state of being covered by the catheter matching portion (0111); Wherein, step S40 is performed after step S20 is completed and before step S30 is performed; or, Step S40 is performed before step S20 is performed.

Images