【発明の詳細な説明】 本発明はセラミックス、石材等の硬質材の切断に特に適
した回転切削工具、特にダイヤモンドやcBNのような超
砥粒を電着した丸鋸に関する。本発明者は先にガラス、
タイル、れんが、コンクリート等のように硬くてもろい
材料の切断において、従来の連続またはセグメントタイ
プの丸鋸に比べて高性能を発揮する超砥粒電着丸鋸を提
案した（特願昭59−211086）。これは要するに、金属製
円形基板の外周に複数の切刃基台を互に間隙を保って設
け、この切刃基台は基板に対して鋭角で傾斜した前面を
有し、さらにこの切刃基台の前面並びに側面の少くとも
この前面に隣接する部分に超砥粒含有層を電着したこと
を特徴とするものである。このような丸鋸の実用化にあ
たって、セラミックスや石材のように極めて硬くてもろ
い材質について行なった試験の結果、切断性能及び耐久
性の面で好適な切刃数と刃頂径との間には一つの相関が
あることを知見し、本発明の完成に到った。従って本発
明の要旨は金属製円形基板の外周に超砥粒を電着した複
数の切刃基台を互に本質的に等間隔を保って設けた硬脆
材切断用丸鋸であって、この切刃基台の側面輪郭は本質
的に三角形乃至台形を呈し、かつこの切刃基台は前面が
基板の円周面に対して、かつ丸鋸の回転方向の反対の方
向に関して鋭角の傾斜面を呈し、この切刃基台の前面並
びに側面の少くともこの前面に隣接する部分に超砥粒含
有層を電着し、上記切刃基台の数Ｎと切刃基台の刃頂部
を通る円の直径Ｄ（cm）との比N/Dがおよそ3.5〜4.5の
範囲に入るような個数Ｎの切刃を設けることにある。そ
れ故例えば台金外径30cmの丸鋸では切刃乃至切刃基台数
の好適範囲は105〜135個であり、7.5cmの小径のもので
は27〜33個となる。このような切刃数−基板径間の相関
は、直径60cm以下のものについて、特に顕著である。The present invention relates to a rotary cutting tool particularly suitable for cutting hard materials such as ceramics and stones, and more particularly to a circular saw electrodeposited with superabrasive grains such as diamond and cBN. The present inventor first made glass,
We have proposed a superabrasive grain electrodeposition circular saw that exhibits higher performance than conventional continuous or segment type circular saws when cutting hard and brittle materials such as tiles, bricks and concrete. 211086). In short, a plurality of cutting blade bases are provided on the outer circumference of a metal circular substrate with a gap between them, and this cutting blade base has a front surface inclined at an acute angle with respect to the substrate. It is characterized in that a superabrasive-containing layer is electrodeposited on the front surface and at least the side surface of the table adjacent to the front surface. In the practical application of such a circular saw, as a result of a test conducted on extremely hard and brittle materials such as ceramics and stone materials, it was found that the number of cutting edges and the cutting edge diameter suitable for cutting performance and durability were between The inventors have found that there is one correlation and have completed the present invention. Therefore, the gist of the present invention is a circular saw for hard and brittle material cutting, in which a plurality of cutting blade bases having superabrasive grains electrodeposited on the outer circumference of a metal circular substrate are provided at essentially essentially equal intervals. The side profile of the cutting base is essentially triangular or trapezoidal, and the cutting base has an inclined front surface with respect to the circumferential surface of the substrate and with respect to the direction opposite to the direction of rotation of the circular saw. A surface, and a superabrasive-containing layer is electrodeposited on the front surface of the cutting blade base and at least a portion of the side surface adjacent to the front surface, and the number N of the cutting blade bases and the top of the cutting blade base are set. The number N of cutting blades is provided so that the ratio N / D to the diameter D (cm) of the passing circle is in the range of about 3.5 to 4.5. Therefore, for example, a circular saw having a base metal outer diameter of 30 cm has a preferable range of the number of cutting blades or cutting blade bases of 105 to 135, and a small diameter of 7.5 cm has a preferable range of 27 to 33. Such a correlation between the number of cutting edges and the diameter of the substrate is particularly remarkable when the diameter is 60 cm or less.
比N/Dの値を上記範囲に設定する本発明においては、隣
接刃頂部間の距離が適正化されることにより、被削材の
除去が効果的に行なわれ、また砥粒に適切な衝撃が加え
られるので砥粒の自己発刃、また砥粒脱落後の切刃基台
摩滅が効果的に進行する。この結果として総合的に、効
率的な切断作業が達成されるものである。In the present invention in which the value of the ratio N / D is set in the above range, the distance between the adjacent blade tips is optimized so that the work material is effectively removed, and the impact is appropriate for the abrasive grains. As a result, the self-blading of the abrasive grains and the abrasion of the base of the cutting blade after the abrasive grains have fallen off effectively. As a result, an efficient cutting operation is achieved as a whole.
切刃数が上記範囲よりも少ないと切断抵抗は小さい利点
はあるが、切刃に保持される砥粒の総量が少なくなるこ
とから丸鋸１枚当りの切断距離が減少し、また鋸の耐久
性も低下するので、作業性が悪化するという欠点を生じ
る。一方切刃数がこの範囲を超えると、切刃基台の被切
断材との接触面における砥粒量が過度に多くなるため、
切断抵抗も著しく増すので、却って切削能率が低下し、
さらに、切削能率にばらつきが生じやすくなって、安定
した性能が得にくゝなる。If the number of cutting blades is less than the above range, the cutting resistance will be small, but the total amount of abrasive particles held by the cutting blades will be small, so the cutting distance per circular saw will be reduced, and the durability of the saw will be reduced. Since the workability also deteriorates, there is a drawback that workability deteriorates. On the other hand, when the number of cutting edges exceeds this range, the amount of abrasive grains in the contact surface with the material to be cut of the cutting edge base becomes excessively large,
Since cutting resistance also increases significantly, cutting efficiency decreases,
Furthermore, the cutting efficiency tends to vary, and stable performance is difficult to obtain.
本発明において超砥粒含有層で被覆されるべき基台は前
面が、該基板と同心の円周に対して60゜以下の、好まし
くは45±７゜の範囲の傾斜角を呈する。この前面は必ず
しも平面とする必要はなく、各点において接平面が同様
の鋭角をなす湾曲面であってもよい。従って基板に垂直
方向に見た基台の断面形状は、基板内に底辺をもつ三角
形又は台形に近い。頂角の大きさと形成される間隔（ピ
ッチ）との関係によって、隣接基台は互に接して起始し
たり、底部間に間隙を置いて配置される。この後者の構
成は各基台の底部に到るまで確実に砥粒を固着でき、基
台が消耗してしまうまで切断作業を続けることができる
ことに加えて、基台の比較的高能率が得られる部分のみ
に砥粒を固着して利用することになるので、高価な砥粒
の使用量が鋸の外径に比して少い点で、経済的である。
上記において前面又は後面というのは、切断作業時の回
転方向に関してであることは、自明のとおりである。In the present invention, the front surface of the base to be coated with the superabrasive grain-containing layer has a front surface having an inclination angle of 60 ° or less, preferably in the range of 45 ± 7 °, with respect to a circumference concentric with the substrate. The front surface does not necessarily have to be a flat surface, and the tangent plane at each point may be a curved surface having a similar acute angle. Therefore, the cross-sectional shape of the base viewed in the direction perpendicular to the substrate is close to a triangle or a trapezoid having a base in the substrate. Depending on the relationship between the size of the apex angle and the interval (pitch) formed, the adjacent bases may start to be in contact with each other or may be arranged with a gap between the bottoms. This latter structure can firmly fix the abrasive grains to the bottom of each base, and can continue the cutting work until the base is exhausted, and in addition, a relatively high efficiency of the base can be obtained. Since the abrasive grains are fixedly used only in the portion to be used, the amount of expensive abrasive grains used is smaller than the outer diameter of the saw, which is economical.
It is obvious that the front surface or the rear surface in the above is the direction of rotation during the cutting operation.
本発明の丸鋸における切刃基台の高さは、切刃数がこの
明細書に規定する条件を満たしていれば、概して台金径
の大きさとは無関係に決定できるが、特に好適な範囲は
10mm以下である。従って、本発明においては、例えば高
さ1mm程度の切刃基台をもつ刃頂部300mmの丸鋸や、高さ
10mmの切刃をもつ刃頂部80mmの丸鋸を得ることができ
る。The height of the cutting blade base in the circular saw of the present invention can be generally determined irrespective of the size of the base metal diameter as long as the number of cutting blades satisfies the conditions specified in this specification, but a particularly preferable range. Is
It is 10 mm or less. Therefore, in the present invention, for example, a circular saw with a blade tip of 300 mm having a cutting blade base with a height of about 1 mm, and a height
It is possible to obtain a circular saw with a tip of 80 mm and a cutting edge of 10 mm.
刃頂径の定義は、切刃基台が三角形輪郭をもつ場合はそ
の頂点を通る円の直径であることが自明であるが、台形
輪郭の場合は、２本の側辺の延長線または輪郭底部にお
ける接続の、交点を通る円として定義される。It is obvious that the definition of the cutting edge diameter is the diameter of the circle passing through the apex when the cutting edge base has a triangular contour, but in the case of a trapezoidal contour, an extension line or contour of two sides Defined as the circle through the intersection of the connections at the bottom.
切刃基台の大きさとしては、切刃を細かくする程切断時
の衝撃によるワークの割れが減少し、かつ切れ味も向上
するが、切刃自体の剛性は低下する。本発明の丸鋸にお
いては頂角を特に45±７゜の範囲とするのが好ましい。As for the size of the cutting blade base, as the cutting blade is made finer, the cracking of the work due to the impact during cutting is reduced and the sharpness is improved, but the rigidity of the cutting blade itself is lowered. In the circular saw of the present invention, it is preferable that the apex angle is in the range of 45 ± 7 °.
切刃の並びについては、各基台乃至切刃を基板とほゞ同
一平面内に配置するのが簡便であるが、このほか厚み方
向に偏移した千鳥状、或は１〜数個ごとに反対の角度を
もって基板に対して傾斜させることができる。Regarding the arrangement of the cutting blades, it is convenient to arrange each base or cutting blades on the same plane as the substrate, but in addition to this, staggered in the thickness direction, or every 1 to several cutting blades It can be tilted with respect to the substrate at opposite angles.
切刃基台に固着せしめる超砥粒としては、ダイヤモンド
や硬質相の窒化硼素（cBN,wBN等）の超砥粒が利用可能
であり、これらは特に超砥粒粒子を電着のような非加熱
的手法を用い、Ni等の金属と共に、超砥粒含有層として
切刃基台の前面および側面に固着する。As the superabrasive grains to be fixed to the cutting blade base, diamond or hard phase boron nitride (cBN, wBN, etc.) superabrasive grains can be used. Using a heating method, it is fixed to the front and side surfaces of the cutting blade base as a super-abrasive-grain containing layer together with a metal such as Ni.
本発明においては超砥粒としてダイヤモンドを用いる場
合でも、従来のダイヤモンドチップ砥石の製作に多用さ
れている焼結工程におけるような酸化、相転移、熱応力
による粒子の強度低下は生じないが、しかし切断時には
大きな衝撃荷重が加わるので、結晶性の良好な、即ち内
部歪みの少いダイヤモンド粒子が好適である。こゝで本
発明による丸鋸においては切断作用は主として基台前面
に固着された超砥粒含有層によって行われ、一方側面に
配置した超砥粒含有層は主に切溝の幅を広げる役割をす
る。側面に必要以上の超砥粒含有層を行っても、単に接
触面積の増加による切断抵抗を増すのみであり、切断性
能の向上を得られないから、側面の超砥粒含有層は基台
の前面に隣接しかつ基台側面面積の1/2以下とするのが
望ましい。特に基台前面に接して基台底部から先端ま
で、本質的に一様な幅とするのがよい。この形態は電着
操作に先立ち、基台前面に接した一定幅を残して基台側
面を、基板と共に予めマスキングしておくことが達成す
ることができる。こうして得られる丸鋸は、使用の初期
から後期に到るまで、ほゞ一定な切断低抗条件下で使用
することができる。In the present invention, even when diamond is used as the superabrasive grains, oxidation, phase transition, and particle strength reduction due to thermal stress do not occur as in the sintering process that is often used in the production of conventional diamond tip grinding wheels, but Since a large impact load is applied at the time of cutting, diamond particles having good crystallinity, that is, having a small internal strain are suitable. Here, in the circular saw according to the present invention, the cutting action is mainly performed by the super-abrasive-grain-containing layer fixed to the front surface of the base, while the super-abrasive-grain-containing layer disposed on the side surface mainly serves to widen the width of the kerf. do. Even if the superabrasive grain-containing layer is applied to the side surface more than necessary, it only increases the cutting resistance due to an increase in the contact area, and the cutting performance cannot be improved. Adjacent to the front surface and preferably less than half the side surface area of the base. In particular, it is preferable that the width of the base, which is in contact with the front surface of the base, is substantially uniform from the bottom to the tip of the base. This form can be achieved by masking the side surface of the base with the substrate in advance, leaving a certain width in contact with the front surface of the base, prior to the electrodeposition operation. The circular saw obtained in this manner can be used under almost constant cutting resistance conditions from the beginning to the end of use.
このように本発明に従って作成された丸鋸においては、
基台前面の特に先端付近に配置した超砥粒粒子が効果的
に切断を行い、この粒子が基台から脱落すると続いて露
出基台が削耗されて直下の超砥粒粒子が露出し、この結
果有効切断部は下方へ移動し、これは基台底辺部に達し
て露出基台面の増加により切断抵抗が大巾に増大するま
で進行するので、長時間にわたって安定した切れ味が得
られるのである。基台部、従って台金全体を構成する材
質としてはSK種鋼程度の剛性もつものが適当である。Thus, in the circular saw made according to the present invention,
The superabrasive particles placed near the tip of the front surface of the base are effectively cut, and when the particles fall off the base, the exposed base is abraded and the superabrasive particles immediately below are exposed, As a result, the effective cutting portion moves downward, and this progresses until it reaches the base bottom portion and the cutting resistance greatly increases due to the increase of the exposed base surface, so that a stable sharpness can be obtained for a long time. . As a material for forming the base, and thus the entire base metal, a material having a rigidity of SK grade steel is suitable.
実施例 1. 第１図に略示した形状にて35〜52個までの切刃数をもつ
丸鋸を製作し、切断性能を比較試験した。直径12cmのSK
5鋼板から切出した台金１は厚さ0.8mm、高さ6.0mm、頂
角45゜、円周に直角な後面をもつ切刃基台２と、この基
台の内方に設けた厚さ1mm、直径108mmの基板部３から成
り、基台は一定ピッチで35、39、44、48、52（N/D比:2.
9、3.3、3.7、4.0、4.3）の５段階とした。図におい
て、矢印は切断時の丸鋸の回転方向を示す。Example 1. A circular saw having a cutting edge number of 35 to 52 was manufactured in the shape shown in FIG. 1 and the cutting performances were compared and tested. SK with a diameter of 12 cm
5 The base metal 1 cut out from the steel plate has a thickness of 0.8 mm, a height of 6.0 mm, an apex angle of 45 °, and a cutting blade base 2 having a rear surface perpendicular to the circumference, and a thickness provided inside the base. It consists of a board part 3 with a diameter of 1 mm and a diameter of 108 mm, and the base is a fixed pitch of 35, 39, 44, 48, 52 (N / D ratio: 2.
There are five levels: 9, 3.3, 3.7, 4.0, 4.3). In the figure, the arrow indicates the direction of rotation of the circular saw during cutting.
台金の基板部及び基台の後半分等電着不要部分をプラス
チック部品でマスキングし、Niの下地めっきを施したあ
と、これを第２図に示すような型４に入れ、台金１の下
地めっき層上にダイヤモンド粒子５（東名ダイヤモンド
工業（株）製、IMS−Ｂ級、40/50メッシュ）を散布し、
電解浴を入れた槽６中で通電してNiを析出させて仮付け
し、さらに別の構成で本付けを行なった。得られた切刃
部の厚さは約1.8mmであった。このような丸鋸を各刃数
について２枚ずつ用意した。The base metal part of the base metal and the rear half of the base that do not require electrodeposition are masked with plastic parts, and after Ni undercoating is applied, this is put into a mold 4 as shown in FIG. Disperse diamond particles 5 (manufactured by Tomei Diamond Industry Co., Ltd., IMS-B grade, 40/50 mesh) on the undercoat layer,
In a bath 6 containing an electrolytic bath, electricity was applied to deposit Ni for temporary attachment, and then final attachment was performed with another configuration. The thickness of the obtained cutting edge portion was about 1.8 mm. Two such circular saws were prepared for each number of blades.
実施例 2. 切刃基台部の厚さ1.2mm、高さ6mm、頂角45゜外径30cmの
台金を用いて、上記と同様な操作で、切刃数が84、96、
108、120、132（N/D比:2.8、3.2、3.6、4.0、4.4）、切
刃部の厚さ2.0mmの丸鋸を、それぞれ２枚ずつ用意し
た。Example 2. Using a base metal having a cutting blade base portion thickness of 1.2 mm, a height of 6 mm, and an apex angle of 45 ° and an outer diameter of 30 cm, the number of cutting blades is 84, 96 by the same operation as above.
Two circular saws each having 108, 120, 132 (N / D ratio: 2.8, 3.2, 3.6, 4.0, 4.4) and a cutting edge portion having a thickness of 2.0 mm were prepared.
実施例 3. 切刃基台部の厚さ0.8mm、高さ6.0mm、頂角45゜で外径7.
5cmの台金を用いて、切刃数が21、24、27、30、33（N/D
比:2.8、3.2、3.6、4.0、4.4）の５個の丸鋸を各２枚ず
つ作成した。Example 3. Cutting edge base thickness 0.8 mm, height 6.0 mm, apex angle 45 ° and outer diameter 7.
With a 5 cm base metal, the number of cutting edges is 21, 24, 27, 30, 33 (N / D
Five circular saws with a ratio of 2.8, 3.2, 3.6, 4.0, 4.4) were prepared, two for each.
上記のようにして得られた本発明品及び比較用の丸鋸を
用い、次の条件で切断試験を行なった。A cutting test was performed under the following conditions using the inventive product and the circular saw for comparison obtained as described above.
周 速:4100m/分 方 式：水道水 冷却 被削材：磁器タイル、108mm口×10mm（実施例1,3のもの
に対して） コンクリートFC180（実施例３のものに対して） 切断抵抗が異常に大きくなり実質的に作業の続行が不可
能になるまでに達成した切断距離並びに切断速度を、切
刃数Ｎと初期刃頂型Ｄとの比N/Dの関数として第３図に
示す。これらの値はそれぞれ、２個の丸鋸についての平
均値である。図中△−△は実施例１に従って作成された
Ｄ＝12cmの丸鋸、○−○は実施例２のＤ＝30cmのもの、
＊−＊は実施例３のＤ＝7.5cmのものの性能の変動を示
す。このグラフから明らかなように、N/Dの値が本発明
に規定した範囲に含まれるとき、特に著しい性能が得ら
れている。Peripheral speed: 4100 m / min Method: Tap water cooling Work material: Porcelain tile, 108 mmopening x 10 mm (for Examples 1 and 3) Concrete FC180 (for Example 3) Cutting resistance The cutting distance and the cutting speed achieved before becoming abnormally large and making it virtually impossible to continue the work are shown in FIG. 3 as a function of the ratio N / D between the number of cutting edges N and the initial cutting edge die D. . Each of these values is an average value for two circular saws. In the figure, Δ-Δ is a circular saw of D = 12 cm prepared according to the first embodiment, ◯-◯ is that of D = 30 cm of the second embodiment,
*-* Shows the variation in performance of Example 3 with D = 7.5 cm. As is clear from this graph, particularly remarkable performance is obtained when the value of N / D falls within the range specified in the present invention.
第１図は本発明に従って作成された丸鋸の一例を示す概
略図、第２図はこのような丸鋸の作成に利用可能な砥粒
電着装置の概略図、第３図は作成された丸鋸の研削性能
を、刃数／直径（N/D）比との相関を示すグラフであ
る。 １……台金,2……基台,3……基板部， ４……型,5……ダイヤモンド粒子， ６……電解槽，FIG. 1 is a schematic view showing an example of a circular saw made according to the present invention, FIG. 2 is a schematic view of an abrasive grain electrodeposition apparatus usable for producing such a circular saw, and FIG. 3 is produced. It is a graph which shows the grinding performance of a circular saw with the number of blades / diameter (N / D) ratio. 1 ... Base metal, 2 ... Base, 3 ... Substrate, 4 ... Mold, 5 ... Diamond particles, 6 ... Electrolyzer,
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16998885AJPH0683929B2 (en) | 1985-08-01 | 1985-08-01 | Circular saw for cutting hard materials |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16998885AJPH0683929B2 (en) | 1985-08-01 | 1985-08-01 | Circular saw for cutting hard materials |
| Publication Number | Publication Date |
|---|---|
| JPS6234719A JPS6234719A (en) | 1987-02-14 |
| JPH0683929B2true JPH0683929B2 (en) | 1994-10-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16998885AExpired - Fee RelatedJPH0683929B2 (en) | 1985-08-01 | 1985-08-01 | Circular saw for cutting hard materials |
| Country | Link |
|---|---|
| JP (1) | JPH0683929B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US12121713B2 (en) | 2019-09-25 | 2024-10-22 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible blood conduits |
| US12161857B2 (en) | 2018-07-31 | 2024-12-10 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12220570B2 (en) | 2018-10-05 | 2025-02-11 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12409310B2 (en) | 2019-12-11 | 2025-09-09 | Shifamed Holdings, Llc | Descending aorta and vena cava blood pumps |
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| JP4236240B2 (en)* | 2002-05-27 | 2009-03-11 | 株式会社アライドマテリアル | Circular saw substrate having a noise prevention function and circular saw |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US12161857B2 (en) | 2018-07-31 | 2024-12-10 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12220570B2 (en) | 2018-10-05 | 2025-02-11 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| US12121713B2 (en) | 2019-09-25 | 2024-10-22 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible blood conduits |
| US12409310B2 (en) | 2019-12-11 | 2025-09-09 | Shifamed Holdings, Llc | Descending aorta and vena cava blood pumps |
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